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Finding the Third Proportional to 289,498 and 637,894

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Solution

The third proportional to 289,498 and 637,894 is: 1,405,566.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,498 : 637,894 = 637,894 : x
  2. Step 2: Convert to fraction form
    289,498/637,894 = 637,894/x
  3. Step 3: Cross multiply
    289,498x = 637,894 × 637,894
  4. Step 4: Simplify right side
    289,498x = 406,908,755,236
  5. Step 5: Solve for x
    x = 406,908,755,236/289,498
  6. Step 6: Final answer
    x = 1,405,566.72

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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.