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Finding the Fourth Proportional to 681,814.59, 940,910.71 and 375,902.85

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Solution

The fourth proportional to 681,814.59, 940,910.71 and 375,902.85 is: 518,749.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,814.59 : 940,910.71 = 375,902.85 : x
  2. Step 2: Convert to fraction form
    681,814.59/940,910.71 = 375,902.85/x
  3. Step 3: Cross multiply
    681,814.59x = 940,910.71 × 375,902.85
  4. Step 4: Simplify right side
    681,814.59x = 353,691,017,074.46
  5. Step 5: Solve for x
    x = 353,691,017,074.46/681,814.59
  6. Step 6: Final answer
    x = 518,749.56

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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.