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Finding the Fourth Proportional to 681,419.97, 940,400.72 and 375,495.83

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Solution

The fourth proportional to 681,419.97, 940,400.72 and 375,495.83 is: 518,206.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,419.97 : 940,400.72 = 375,495.83 : x
  2. Step 2: Convert to fraction form
    681,419.97/940,400.72 = 375,495.83/x
  3. Step 3: Cross multiply
    681,419.97x = 940,400.72 × 375,495.83
  4. Step 4: Simplify right side
    681,419.97x = 353,116,547,244.13
  5. Step 5: Solve for x
    x = 353,116,547,244.13/681,419.97
  6. Step 6: Final answer
    x = 518,206.92

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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.