Finding the total amount given the percentage of a partial amount

Question

A book sold 36,900 copies in its first month of release. Suppose this represents 9.4% of the number of copies sold to date. How many copies have been sold to date?

Round your answer to the nearest whole number.

Answer 1

36,900 = 9.4% of the total

9.4% = .094

let x = the total

.094x = 36900

x = 36900/.094 = about 392,553.1915

total = about 392,553