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Finding the Fourth Proportional to 423,960.60, 635,940.90 and 411,672.60

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Solution

The fourth proportional to 423,960.60, 635,940.90 and 411,672.60 is: 617,508.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,960.60 : 635,940.90 = 411,672.60 : x
  2. Step 2: Convert to fraction form
    423,960.60/635,940.90 = 411,672.60/x
  3. Step 3: Cross multiply
    423,960.60x = 635,940.90 × 411,672.60
  4. Step 4: Simplify right side
    423,960.60x = 261,799,443,749.34
  5. Step 5: Solve for x
    x = 261,799,443,749.34/423,960.60
  6. Step 6: Final answer
    x = 617,508.90

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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.