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Finding the Fourth Proportional to 558,372.78, 770,691.33 and 316,796.76

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Solution

The fourth proportional to 558,372.78, 770,691.33 and 316,796.76 is: 437,257.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,372.78 : 770,691.33 = 316,796.76 : x
  2. Step 2: Convert to fraction form
    558,372.78/770,691.33 = 316,796.76/x
  3. Step 3: Cross multiply
    558,372.78x = 770,691.33 × 316,796.76
  4. Step 4: Simplify right side
    558,372.78x = 244,152,516,304.09
  5. Step 5: Solve for x
    x = 244,152,516,304.09/558,372.78
  6. Step 6: Final answer
    x = 437,257.20

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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.