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Finding the Fourth Proportional to 552,400.78, 762,287.88 and 307,397.65

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Solution

The fourth proportional to 552,400.78, 762,287.88 and 307,397.65 is: 424,194.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,400.78 : 762,287.88 = 307,397.65 : x
  2. Step 2: Convert to fraction form
    552,400.78/762,287.88 = 307,397.65/x
  3. Step 3: Cross multiply
    552,400.78x = 762,287.88 × 307,397.65
  4. Step 4: Simplify right side
    552,400.78x = 234,325,502,935.48
  5. Step 5: Solve for x
    x = 234,325,502,935.48/552,400.78
  6. Step 6: Final answer
    x = 424,194.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.