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Finding the Fourth Proportional to 695,839.50, 960,258.51 and 394,091.82

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Solution

The fourth proportional to 695,839.50, 960,258.51 and 394,091.82 is: 543,846.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,839.50 : 960,258.51 = 394,091.82 : x
  2. Step 2: Convert to fraction form
    695,839.50/960,258.51 = 394,091.82/x
  3. Step 3: Cross multiply
    695,839.50x = 960,258.51 × 394,091.82
  4. Step 4: Simplify right side
    695,839.50x = 378,430,023,876.39
  5. Step 5: Solve for x
    x = 378,430,023,876.39/695,839.50
  6. Step 6: Final answer
    x = 543,846.71

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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.