Finding the Fourth Proportional to 861,775.20, 1,189,459.35 and 499,140.63
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Solution
The fourth proportional to 861,775.20, 1,189,459.35 and 499,140.63 is: 688,935.45
Step by Step Solution
- Step 1: Write the proportion equation
861,775.20 : 1,189,459.35 = 499,140.63 : x - Step 2: Convert to fraction form
861,775.20/1,189,459.35 = 499,140.63/x - Step 3: Cross multiply
861,775.20x = 1,189,459.35 × 499,140.63 - Step 4: Simplify right side
861,775.20x = 593,707,489,318.39 - Step 5: Solve for x
x = 593,707,489,318.39/861,775.20 - Step 6: Final answer
x = 688,935.45
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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.