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Finding the Third Proportional to 393,897 and 611,079

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Solution

The third proportional to 393,897 and 611,079 is: 948,008.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,897 : 611,079 = 611,079 : x
  2. Step 2: Convert to fraction form
    393,897/611,079 = 611,079/x
  3. Step 3: Cross multiply
    393,897x = 611,079 × 611,079
  4. Step 4: Simplify right side
    393,897x = 373,417,544,241
  5. Step 5: Solve for x
    x = 373,417,544,241/393,897
  6. Step 6: Final answer
    x = 948,008.09

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.