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Finding the Fourth Proportional to 552,856.78, 762,933.90 and 307,839.88

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Solution

The fourth proportional to 552,856.78, 762,933.90 and 307,839.88 is: 424,814.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,856.78 : 762,933.90 = 307,839.88 : x
  2. Step 2: Convert to fraction form
    552,856.78/762,933.90 = 307,839.88/x
  3. Step 3: Cross multiply
    552,856.78x = 762,933.90 × 307,839.88
  4. Step 4: Simplify right side
    552,856.78x = 234,861,480,223.93
  5. Step 5: Solve for x
    x = 234,861,480,223.93/552,856.78
  6. Step 6: Final answer
    x = 424,814.33

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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.