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Finding the Fourth Proportional to 437,909.70, 656,864.55 and 432,004.80

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Solution

The fourth proportional to 437,909.70, 656,864.55 and 432,004.80 is: 648,007.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,909.70 : 656,864.55 = 432,004.80 : x
  2. Step 2: Convert to fraction form
    437,909.70/656,864.55 = 432,004.80/x
  3. Step 3: Cross multiply
    437,909.70x = 656,864.55 × 432,004.80
  4. Step 4: Simplify right side
    437,909.70x = 283,768,638,549.84
  5. Step 5: Solve for x
    x = 283,768,638,549.84/437,909.70
  6. Step 6: Final answer
    x = 648,007.20

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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.