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Finding the Fourth Proportional to 502,408.40, 753,612.60 and 498,909.20

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Solution

The fourth proportional to 502,408.40, 753,612.60 and 498,909.20 is: 748,363.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,408.40 : 753,612.60 = 498,909.20 : x
  2. Step 2: Convert to fraction form
    502,408.40/753,612.60 = 498,909.20/x
  3. Step 3: Cross multiply
    502,408.40x = 753,612.60 × 498,909.20
  4. Step 4: Simplify right side
    502,408.40x = 375,984,259,375.92
  5. Step 5: Solve for x
    x = 375,984,259,375.92/502,408.40
  6. Step 6: Final answer
    x = 748,363.80

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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.