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Finding the Fourth Proportional to 492,757.30, 739,135.95 and 439,613.20

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Solution

The fourth proportional to 492,757.30, 739,135.95 and 439,613.20 is: 659,419.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,757.30 : 739,135.95 = 439,613.20 : x
  2. Step 2: Convert to fraction form
    492,757.30/739,135.95 = 439,613.20/x
  3. Step 3: Cross multiply
    492,757.30x = 739,135.95 × 439,613.20
  4. Step 4: Simplify right side
    492,757.30x = 324,933,920,214.54
  5. Step 5: Solve for x
    x = 324,933,920,214.54/492,757.30
  6. Step 6: Final answer
    x = 659,419.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.