Finding the Fourth Proportional to 1,157,301,209.97, 1,596,886,351.45 and 681,392,628.79
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Solution
The fourth proportional to 1,157,301,209.97, 1,596,886,351.45 and 681,392,628.79 is: 940,210,361.41
Step by Step Solution
- Step 1: Write the proportion equation
1,157,301,209.97 : 1,596,886,351.45 = 681,392,628.79 : x - Step 2: Convert to fraction form
1,157,301,209.97/1,596,886,351.45 = 681,392,628.79/x - Step 3: Cross multiply
1,157,301,209.97x = 1,596,886,351.45 × 681,392,628.79 - Step 4: Simplify right side
1,157,301,209.97x = 1,088,106,588,887,691,648 - Step 5: Solve for x
x = 1,088,106,588,887,691,648/1,157,301,209.97 - Step 6: Final answer
x = 940,210,361.41
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.