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Finding the Third Proportional to 312,147 and 663,174

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Solution

The third proportional to 312,147 and 663,174 is: 1,408,950.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,147 : 663,174 = 663,174 : x
  2. Step 2: Convert to fraction form
    312,147/663,174 = 663,174/x
  3. Step 3: Cross multiply
    312,147x = 663,174 × 663,174
  4. Step 4: Simplify right side
    312,147x = 439,799,754,276
  5. Step 5: Solve for x
    x = 439,799,754,276/312,147
  6. Step 6: Final answer
    x = 1,408,950.76

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.