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Finding the Fourth Proportional to 552,737.05, 762,791.92 and 311,028.05

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Solution

The fourth proportional to 552,737.05, 762,791.92 and 311,028.05 is: 429,227.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,737.05 : 762,791.92 = 311,028.05 : x
  2. Step 2: Convert to fraction form
    552,737.05/762,791.92 = 311,028.05/x
  3. Step 3: Cross multiply
    552,737.05x = 762,791.92 × 311,028.05
  4. Step 4: Simplify right side
    552,737.05x = 237,249,684,562.77
  5. Step 5: Solve for x
    x = 237,249,684,562.77/552,737.05
  6. Step 6: Final answer
    x = 429,227.04

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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.