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Finding the Fourth Proportional to 552,876.30, 762,993.86 and 311,174.55

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Solution

The fourth proportional to 552,876.30, 762,993.86 and 311,174.55 is: 429,434.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,876.30 : 762,993.86 = 311,174.55 : x
  2. Step 2: Convert to fraction form
    552,876.30/762,993.86 = 311,174.55/x
  3. Step 3: Cross multiply
    552,876.30x = 762,993.86 × 311,174.55
  4. Step 4: Simplify right side
    552,876.30x = 237,424,269,482.39
  5. Step 5: Solve for x
    x = 237,424,269,482.39/552,876.30
  6. Step 6: Final answer
    x = 429,434.70

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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.