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Finding the Fourth Proportional to 681,379.48, 940,344.97 and 375,455.49

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Solution

The fourth proportional to 681,379.48, 940,344.97 and 375,455.49 is: 518,151.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,379.48 : 940,344.97 = 375,455.49 : x
  2. Step 2: Convert to fraction form
    681,379.48/940,344.97 = 375,455.49/x
  3. Step 3: Cross multiply
    681,379.48x = 940,344.97 × 375,455.49
  4. Step 4: Simplify right side
    681,379.48x = 353,057,681,480.39
  5. Step 5: Solve for x
    x = 353,057,681,480.39/681,379.48
  6. Step 6: Final answer
    x = 518,151.33

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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.