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Finding the Fourth Proportional to 402,454.20, 604,847.70 and 351,132.60

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Solution

The fourth proportional to 402,454.20, 604,847.70 and 351,132.60 is: 527,716.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,454.20 : 604,847.70 = 351,132.60 : x
  2. Step 2: Convert to fraction form
    402,454.20/604,847.70 = 351,132.60/x
  3. Step 3: Cross multiply
    402,454.20x = 604,847.70 × 351,132.60
  4. Step 4: Simplify right side
    402,454.20x = 212,381,745,505.02
  5. Step 5: Solve for x
    x = 212,381,745,505.02/402,454.20
  6. Step 6: Final answer
    x = 527,716.56

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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.