Arithmetic on today's supply, not a forecast. It assumes nothing about whether Dogecoin could attract that much money.
A coin's market capitalisation is its price multiplied by the number of coins in circulation. Dogecoin has 171,660,574,209 DOGE in circulation at $0.08467 each, which is $14.53B. Holding that supply still and putting Zcash's $19.29B in its place gives $0.11236583 per DOGE.
The two are close in size, so the answer is a 1.33x move. Dogecoin and Zcash are within a factor of two of each other by market capitalisation.
Supply is held still, and in practice it moves: coins are minted, burned and unlocked, and every one of those changes the price a given market capitalisation implies. The figure also says nothing about whether the money exists to buy DOGE at that level, which is the part that actually decides a price.
$0.11236583 per DOGE. That is Zcash's current market capitalisation of $19.29B divided across the 171,660,574,209 DOGE in circulation.
1.33x. Dogecoin trades at $0.08467 today and Zcash's market cap is $19.29B against Dogecoin's $14.53B.
No. It is one division: Zcash's market capitalisation spread over the supply of DOGE that exists today. It assumes nothing about whether Dogecoin could attract that much money, and it holds the supply still when in practice supply changes.
It sets it. Market cap is price times circulating supply, so the same $19.29B of market cap spread over more coins gives a lower price per coin. This uses the 171,660,574,209 DOGE in circulation now.