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Finding the Third Proportional to 339,817 and 539,859

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Solution

The third proportional to 339,817 and 539,859 is: 857,660.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,817 : 539,859 = 539,859 : x
  2. Step 2: Convert to fraction form
    339,817/539,859 = 539,859/x
  3. Step 3: Cross multiply
    339,817x = 539,859 × 539,859
  4. Step 4: Simplify right side
    339,817x = 291,447,739,881
  5. Step 5: Solve for x
    x = 291,447,739,881/339,817
  6. Step 6: Final answer
    x = 857,660.86

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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.