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Finding the Fourth Proportional to 485,136.60, 727,704.90 and 437,897.40

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Solution

The fourth proportional to 485,136.60, 727,704.90 and 437,897.40 is: 656,846.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,136.60 : 727,704.90 = 437,897.40 : x
  2. Step 2: Convert to fraction form
    485,136.60/727,704.90 = 437,897.40/x
  3. Step 3: Cross multiply
    485,136.60x = 727,704.90 × 437,897.40
  4. Step 4: Simplify right side
    485,136.60x = 318,660,083,677.26
  5. Step 5: Solve for x
    x = 318,660,083,677.26/485,136.60
  6. Step 6: Final answer
    x = 656,846.10

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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.