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Finding the Third Proportional to 602,817 and 820,935

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Solution

The third proportional to 602,817 and 820,935 is: 1,117,974.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    602,817 : 820,935 = 820,935 : x
  2. Step 2: Convert to fraction form
    602,817/820,935 = 820,935/x
  3. Step 3: Cross multiply
    602,817x = 820,935 × 820,935
  4. Step 4: Simplify right side
    602,817x = 673,934,274,225
  5. Step 5: Solve for x
    x = 673,934,274,225/602,817
  6. Step 6: Final answer
    x = 1,117,974.90

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.