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Finding the Fourth Proportional to 493,769.92, 681,129.62 and 401,987.96

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Solution

The fourth proportional to 493,769.92, 681,129.62 and 401,987.96 is: 554,521.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,769.92 : 681,129.62 = 401,987.96 : x
  2. Step 2: Convert to fraction form
    493,769.92/681,129.62 = 401,987.96/x
  3. Step 3: Cross multiply
    493,769.92x = 681,129.62 × 401,987.96
  4. Step 4: Simplify right side
    493,769.92x = 273,805,906,439.38
  5. Step 5: Solve for x
    x = 273,805,906,439.38/493,769.92
  6. Step 6: Final answer
    x = 554,521.24

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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.