Step 1:
The first step to converting 734.21396728039 to a fraction is to re-write 734.21396728039 in the form p/q where p and q are both positive integers. To start with, 734.21396728039 can be written as simply 734.21396728039/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 734.21396728039, which in this case is 11. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 734.21396728039/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 734.21396728039/1 each by 100000000000:
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 734.21396728039 as a fraction:
10279/14 / 1