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Finding the Fourth Proportional to 437,909.20, 656,863.80 and 432,004.30

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Solution

The fourth proportional to 437,909.20, 656,863.80 and 432,004.30 is: 648,006.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,909.20 : 656,863.80 = 432,004.30 : x
  2. Step 2: Convert to fraction form
    437,909.20/656,863.80 = 432,004.30/x
  3. Step 3: Cross multiply
    437,909.20x = 656,863.80 × 432,004.30
  4. Step 4: Simplify right side
    437,909.20x = 283,767,986,114.34
  5. Step 5: Solve for x
    x = 283,767,986,114.34/437,909.20
  6. Step 6: Final answer
    x = 648,006.45

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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.