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Finding the Fourth Proportional to 552,887.70, 762,902.73 and 311,155.85

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Solution

The fourth proportional to 552,887.70, 762,902.73 and 311,155.85 is: 429,348.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,887.70 : 762,902.73 = 311,155.85 : x
  2. Step 2: Convert to fraction form
    552,887.70/762,902.73 = 311,155.85/x
  3. Step 3: Cross multiply
    552,887.70x = 762,902.73 × 311,155.85
  4. Step 4: Simplify right side
    552,887.70x = 237,381,647,207.26
  5. Step 5: Solve for x
    x = 237,381,647,207.26/552,887.70
  6. Step 6: Final answer
    x = 429,348.76

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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.