So, to Convert 0.42854285. to a fraction, first you must Rewrite the decimal number as a fraction with 1 in the denominator as follows:
0.42854285=0.42854285/1
Next, Multiply to remove 8 decimal places. Here, you multiply top and bottom by 10∧8 = 100000000
0.428542851×100000000/100000000=428542851/100000000
Next, you need to find the greatest common factor . In this case the greatest common factor is 5, so reduce the fraction by dividing both numerator and denominator by GCF = 5
42854285÷5/100000000÷5=8570857/20000000
Therefore, 0.42854285=8570857/20000000