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Finding the Third Proportional to 989,712 and 2,206,872

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Solution

The third proportional to 989,712 and 2,206,872 is: 4,920,910.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,712 : 2,206,872 = 2,206,872 : x
  2. Step 2: Convert to fraction form
    989,712/2,206,872 = 2,206,872/x
  3. Step 3: Cross multiply
    989,712x = 2,206,872 × 2,206,872
  4. Step 4: Simplify right side
    989,712x = 4,870,284,024,384
  5. Step 5: Solve for x
    x = 4,870,284,024,384/989,712
  6. Step 6: Final answer
    x = 4,920,910.35

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Why These Related Problems?

These problems maintain the same ratio (2.23) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.