Arithmetic on today's supply, not a forecast. It assumes nothing about whether XRP could attract that much money.
A coin's market capitalisation is its price multiplied by the number of coins in circulation. XRP has 62,951,177,644 XRP in circulation at $1.3588 each, which is $85.54B. Holding that supply still and putting Hedera's $3.3B in its place gives $0.05249476 per XRP.
XRP is already worth more than Hedera. Moving to the smaller cap would take XRP down to $0.05249476, which is 0.039x of what it trades at now.
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 XRP at that level, which is the part that actually decides a price.
$0.05249476 per XRP. That is Hedera's current market capitalisation of $3.3B divided across the 62,951,177,644 XRP in circulation.
0.039x. XRP trades at $1.3588 today and Hedera's market cap is $3.3B against XRP's $85.54B.
No. It is one division: Hedera's market capitalisation spread over the supply of XRP that exists today. It assumes nothing about whether XRP 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 $3.3B of market cap spread over more coins gives a lower price per coin. This uses the 62,951,177,644 XRP in circulation now.