Finding the Fourth Proportional to 987,538,180.71, 1,361,484,337.35 and 784,527,125.81
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Solution
The fourth proportional to 987,538,180.71, 1,361,484,337.35 and 784,527,125.81 is: 1,081,600,098.99
Step by Step Solution
- Step 1: Write the proportion equation
987,538,180.71 : 1,361,484,337.35 = 784,527,125.81 : x - Step 2: Convert to fraction form
987,538,180.71/1,361,484,337.35 = 784,527,125.81/x - Step 3: Cross multiply
987,538,180.71x = 1,361,484,337.35 × 784,527,125.81 - Step 4: Simplify right side
987,538,180.71x = 1,068,121,394,016,527,744 - Step 5: Solve for x
x = 1,068,121,394,016,527,744/987,538,180.71 - Step 6: Final answer
x = 1,081,600,098.99
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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.