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Finding the Fourth Proportional to 978,156.60, 1,467,234.90 and 635,672.40

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Solution

The fourth proportional to 978,156.60, 1,467,234.90 and 635,672.40 is: 953,508.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,156.60 : 1,467,234.90 = 635,672.40 : x
  2. Step 2: Convert to fraction form
    978,156.60/1,467,234.90 = 635,672.40/x
  3. Step 3: Cross multiply
    978,156.60x = 1,467,234.90 × 635,672.40
  4. Step 4: Simplify right side
    978,156.60x = 932,680,730,246.76
  5. Step 5: Solve for x
    x = 932,680,730,246.76/978,156.60
  6. Step 6: Final answer
    x = 953,508.60

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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.