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Finding the Fourth Proportional to 1,741,979.92, 2,403,932.28 and 978,049.90

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Solution

The fourth proportional to 1,741,979.92, 2,403,932.28 and 978,049.90 is: 1,349,708.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,741,979.92 : 2,403,932.28 = 978,049.90 : x
  2. Step 2: Convert to fraction form
    1,741,979.92/2,403,932.28 = 978,049.90/x
  3. Step 3: Cross multiply
    1,741,979.92x = 2,403,932.28 × 978,049.90
  4. Step 4: Simplify right side
    1,741,979.92x = 2,351,165,726,060.77
  5. Step 5: Solve for x
    x = 2,351,165,726,060.77/1,741,979.92
  6. Step 6: Final answer
    x = 1,349,708.86

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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.