Step 1:
The first step to converting 647211.2636721 to a fraction is to re-write 647211.2636721 in the form p/q where p and q are both positive integers. To start with, 647211.2636721 can be written as simply 647211.2636721/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 647211.2636721, which in this case is 7. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 647211.2636721/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 647211.2636721/1 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 647211.2636721 as a fraction:
647211/1 / 1