Step 1:
The first step to converting 704640.9955409 to a fraction is to re-write 704640.9955409 in the form p/q where p and q are both positive integers. To start with, 704640.9955409 can be written as simply 704640.9955409/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 704640.9955409, which in this case is 7. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 704640.9955409/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 704640.9955409/1 each by 10000000:
Step 3:
Now the last step is to simplify the fraction (if possible) by finding similar factors and cancelling them out, which leads to the following answer for 704640.9955409 as a fraction:
704641/1 / 1