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Finding the Fourth Proportional to 498,475.10, 747,712.65 and 443,362.70

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Solution

The fourth proportional to 498,475.10, 747,712.65 and 443,362.70 is: 665,044.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,475.10 : 747,712.65 = 443,362.70 : x
  2. Step 2: Convert to fraction form
    498,475.10/747,712.65 = 443,362.70/x
  3. Step 3: Cross multiply
    498,475.10x = 747,712.65 × 443,362.70
  4. Step 4: Simplify right side
    498,475.10x = 331,507,899,328.16
  5. Step 5: Solve for x
    x = 331,507,899,328.16/498,475.10
  6. Step 6: Final answer
    x = 665,044.05

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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.