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Finding the Third Proportional to 339,822 and 539,865

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Solution

The third proportional to 339,822 and 539,865 is: 857,667.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,822 : 539,865 = 539,865 : x
  2. Step 2: Convert to fraction form
    339,822/539,865 = 539,865/x
  3. Step 3: Cross multiply
    339,822x = 539,865 × 539,865
  4. Step 4: Simplify right side
    339,822x = 291,454,218,225
  5. Step 5: Solve for x
    x = 291,454,218,225/339,822
  6. Step 6: Final answer
    x = 857,667.30

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.