Step 1:
The first step to converting 685203.6478254 to a fraction is to re-write 685203.6478254 in the form p/q where p and q are both positive integers. To start with, 685203.6478254 can be written as simply 685203.6478254/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 685203.6478254, which in this case is 7. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 685203.6478254/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 685203.6478254/1 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 685203.6478254 as a fraction:
685203/1 / 1