Finding the Fourth Proportional to 714,350.87, 985,864.68 and 392,115.54
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Solution
The fourth proportional to 714,350.87, 985,864.68 and 392,115.54 is: 541,152.65
Step by Step Solution
- Step 1: Write the proportion equation
714,350.87 : 985,864.68 = 392,115.54 : x - Step 2: Convert to fraction form
714,350.87/985,864.68 = 392,115.54/x - Step 3: Cross multiply
714,350.87x = 985,864.68 × 392,115.54 - Step 4: Simplify right side
714,350.87x = 386,572,861,365.13 - Step 5: Solve for x
x = 386,572,861,365.13/714,350.87 - Step 6: Final answer
x = 541,152.65
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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.