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Finding the Third Proportional to 644,628 and 1,396,392

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Solution

The third proportional to 644,628 and 1,396,392 is: 3,024,861.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,628 : 1,396,392 = 1,396,392 : x
  2. Step 2: Convert to fraction form
    644,628/1,396,392 = 1,396,392/x
  3. Step 3: Cross multiply
    644,628x = 1,396,392 × 1,396,392
  4. Step 4: Simplify right side
    644,628x = 1,949,910,617,664
  5. Step 5: Solve for x
    x = 1,949,910,617,664/644,628
  6. Step 6: Final answer
    x = 3,024,861.81

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.