Finding the Fourth Proportional to 861,663.74, 1,189,057.61 and 493,877.24
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Solution
The fourth proportional to 861,663.74, 1,189,057.61 and 493,877.24 is: 681,528.60
Step by Step Solution
- Step 1: Write the proportion equation
861,663.74 : 1,189,057.61 = 493,877.24 : x - Step 2: Convert to fraction form
861,663.74/1,189,057.61 = 493,877.24/x - Step 3: Cross multiply
861,663.74x = 1,189,057.61 × 493,877.24 - Step 4: Simplify right side
861,663.74x = 587,248,482,213.12 - Step 5: Solve for x
x = 587,248,482,213.12/861,663.74 - Step 6: Final answer
x = 681,528.60
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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.