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Finding the Third Proportional to 981,486 and 2,117,628

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Solution

The third proportional to 981,486 and 2,117,628 is: 4,568,937.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,486 : 2,117,628 = 2,117,628 : x
  2. Step 2: Convert to fraction form
    981,486/2,117,628 = 2,117,628/x
  3. Step 3: Cross multiply
    981,486x = 2,117,628 × 2,117,628
  4. Step 4: Simplify right side
    981,486x = 4,484,348,346,384
  5. Step 5: Solve for x
    x = 4,484,348,346,384/981,486
  6. Step 6: Final answer
    x = 4,568,937.66

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.