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Finding the Fourth Proportional to 681,661.17, 940,746.57 and 375,791.91

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Solution

The fourth proportional to 681,661.17, 940,746.57 and 375,791.91 is: 518,622.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,661.17 : 940,746.57 = 375,791.91 : x
  2. Step 2: Convert to fraction form
    681,661.17/940,746.57 = 375,791.91/x
  3. Step 3: Cross multiply
    681,661.17x = 940,746.57 × 375,791.91
  4. Step 4: Simplify right side
    681,661.17x = 353,524,948,957.03
  5. Step 5: Solve for x
    x = 353,524,948,957.03/681,661.17
  6. Step 6: Final answer
    x = 518,622.69

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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.