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Finding the Third Proportional to 391,979.25 and 552,009.94

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Solution

The third proportional to 391,979.25 and 552,009.94 is: 777,375.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,979.25 : 552,009.94 = 552,009.94 : x
  2. Step 2: Convert to fraction form
    391,979.25/552,009.94 = 552,009.94/x
  3. Step 3: Cross multiply
    391,979.25x = 552,009.94 × 552,009.94
  4. Step 4: Simplify right side
    391,979.25x = 304,714,971,098.75
  5. Step 5: Solve for x
    x = 304,714,971,098.75/391,979.25
  6. Step 6: Final answer
    x = 777,375.26

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.