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Finding the Third Proportional to 310,926 and 659,218

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Solution

The third proportional to 310,926 and 659,218 is: 1,397,658.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,926 : 659,218 = 659,218 : x
  2. Step 2: Convert to fraction form
    310,926/659,218 = 659,218/x
  3. Step 3: Cross multiply
    310,926x = 659,218 × 659,218
  4. Step 4: Simplify right side
    310,926x = 434,568,371,524
  5. Step 5: Solve for x
    x = 434,568,371,524/310,926
  6. Step 6: Final answer
    x = 1,397,658.52

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.