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Finding the Fourth Proportional to 609,405.12, 914,294.88 and 272,729.52

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Solution

The fourth proportional to 609,405.12, 914,294.88 and 272,729.52 is: 409,178.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,405.12 : 914,294.88 = 272,729.52 : x
  2. Step 2: Convert to fraction form
    609,405.12/914,294.88 = 272,729.52/x
  3. Step 3: Cross multiply
    609,405.12x = 914,294.88 × 272,729.52
  4. Step 4: Simplify right side
    609,405.12x = 249,355,203,760.86
  5. Step 5: Solve for x
    x = 249,355,203,760.86/609,405.12
  6. Step 6: Final answer
    x = 409,178.06

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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.