Because you want to see how much XRP would be if it had the same number of coins as Bitcoin. Coin Price x Number of Coins = Market Cap. So Market Cap / Number of Coins = Coin Price. Your method get's the same answer but mine has one less variable, so I prefer mine.
You are viewing a single comment's thread from:
When you multiply a ratio by a number (XRP Price), you are only multiplying the numerator of that ratio with the number.
(XRP Supply / BTC Supply) (XRP Price) >>> Yours
= [(XRP Supply) (XRP Price)] / BTC Supply
= (XRP Market Cap) / BTC Supply >>> Mine is yours simplified