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Finding the Fourth Proportional to 478,808.43, 718,154.11 and 123,792.72

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Solution

The fourth proportional to 478,808.43, 718,154.11 and 123,792.72 is: 185,673.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,808.43 : 718,154.11 = 123,792.72 : x
  2. Step 2: Convert to fraction form
    478,808.43/718,154.11 = 123,792.72/x
  3. Step 3: Cross multiply
    478,808.43x = 718,154.11 × 123,792.72
  4. Step 4: Simplify right side
    478,808.43x = 88,902,250,656.08
  5. Step 5: Solve for x
    x = 88,902,250,656.08/478,808.43
  6. Step 6: Final answer
    x = 185,673.95

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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.