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Finding the Fourth Proportional to 498,542.60, 747,813.90 and 443,430.20

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Solution

The fourth proportional to 498,542.60, 747,813.90 and 443,430.20 is: 665,145.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,542.60 : 747,813.90 = 443,430.20 : x
  2. Step 2: Convert to fraction form
    498,542.60/747,813.90 = 443,430.20/x
  3. Step 3: Cross multiply
    498,542.60x = 747,813.90 × 443,430.20
  4. Step 4: Simplify right side
    498,542.60x = 331,603,267,239.78
  5. Step 5: Solve for x
    x = 331,603,267,239.78/498,542.60
  6. Step 6: Final answer
    x = 665,145.30

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Similar ratio
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1.5x scale

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.