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Finding the Fourth Proportional to 681,781.77, 940,861.73 and 375,851.16

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Solution

The fourth proportional to 681,781.77, 940,861.73 and 375,851.16 is: 518,676.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,781.77 : 940,861.73 = 375,851.16 : x
  2. Step 2: Convert to fraction form
    681,781.77/940,861.73 = 375,851.16/x
  3. Step 3: Cross multiply
    681,781.77x = 940,861.73 × 375,851.16
  4. Step 4: Simplify right side
    681,781.77x = 353,623,970,740.85
  5. Step 5: Solve for x
    x = 353,623,970,740.85/681,781.77
  6. Step 6: Final answer
    x = 518,676.19

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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.