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Finding the Fourth Proportional to 681,378.69, 940,343.89 and 375,454.71

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Solution

The fourth proportional to 681,378.69, 940,343.89 and 375,454.71 is: 518,150.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,378.69 : 940,343.89 = 375,454.71 : x
  2. Step 2: Convert to fraction form
    681,378.69/940,343.89 = 375,454.71/x
  3. Step 3: Cross multiply
    681,378.69x = 940,343.89 × 375,454.71
  4. Step 4: Simplify right side
    681,378.69x = 353,056,536,337.35
  5. Step 5: Solve for x
    x = 353,056,536,337.35/681,378.69
  6. Step 6: Final answer
    x = 518,150.24

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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.