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Finding the Fourth Proportional to 498,489.60, 747,734.40 and 443,377.20

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Solution

The fourth proportional to 498,489.60, 747,734.40 and 443,377.20 is: 665,065.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,489.60 : 747,734.40 = 443,377.20 : x
  2. Step 2: Convert to fraction form
    498,489.60/747,734.40 = 443,377.20/x
  3. Step 3: Cross multiply
    498,489.60x = 747,734.40 × 443,377.20
  4. Step 4: Simplify right side
    498,489.60x = 331,528,384,615.68
  5. Step 5: Solve for x
    x = 331,528,384,615.68/498,489.60
  6. Step 6: Final answer
    x = 665,065.80

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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.