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Finding the Fourth Proportional to 478,807.43, 718,152.62 and 123,791.72

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Solution

The fourth proportional to 478,807.43, 718,152.62 and 123,791.72 is: 185,672.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,807.43 : 718,152.62 = 123,791.72 : x
  2. Step 2: Convert to fraction form
    478,807.43/718,152.62 = 123,791.72/x
  3. Step 3: Cross multiply
    478,807.43x = 718,152.62 × 123,791.72
  4. Step 4: Simplify right side
    478,807.43x = 88,901,343,842.58
  5. Step 5: Solve for x
    x = 88,901,343,842.58/478,807.43
  6. Step 6: Final answer
    x = 185,672.44

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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.