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Finding the Fourth Proportional to 542,002.60, 812,679.90 and 331,791.40

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Solution

The fourth proportional to 542,002.60, 812,679.90 and 331,791.40 is: 497,488.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,002.60 : 812,679.90 = 331,791.40 : x
  2. Step 2: Convert to fraction form
    542,002.60/812,679.90 = 331,791.40/x
  3. Step 3: Cross multiply
    542,002.60x = 812,679.90 × 331,791.40
  4. Step 4: Simplify right side
    542,002.60x = 269,640,201,772.86
  5. Step 5: Solve for x
    x = 269,640,201,772.86/542,002.60
  6. Step 6: Final answer
    x = 497,488.76

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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.