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Finding the Third Proportional to 289,497 and 637,892

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Solution

The third proportional to 289,497 and 637,892 is: 1,405,562.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,497 : 637,892 = 637,892 : x
  2. Step 2: Convert to fraction form
    289,497/637,892 = 637,892/x
  3. Step 3: Cross multiply
    289,497x = 637,892 × 637,892
  4. Step 4: Simplify right side
    289,497x = 406,906,203,664
  5. Step 5: Solve for x
    x = 406,906,203,664/289,497
  6. Step 6: Final answer
    x = 1,405,562.76

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.