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Finding the Third Proportional to 289,497 and 637,890.50

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Solution

The third proportional to 289,497 and 637,890.50 is: 1,405,556.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,497 : 637,890.50 = 637,890.50 : x
  2. Step 2: Convert to fraction form
    289,497/637,890.50 = 637,890.50/x
  3. Step 3: Cross multiply
    289,497x = 637,890.50 × 637,890.50
  4. Step 4: Simplify right side
    289,497x = 406,904,289,990.25
  5. Step 5: Solve for x
    x = 406,904,289,990.25/289,497
  6. Step 6: Final answer
    x = 1,405,556.15

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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.