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Finding the Third Proportional to 981,372 and 2,117,418

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Solution

The third proportional to 981,372 and 2,117,418 is: 4,568,562.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,372 : 2,117,418 = 2,117,418 : x
  2. Step 2: Convert to fraction form
    981,372/2,117,418 = 2,117,418/x
  3. Step 3: Cross multiply
    981,372x = 2,117,418 × 2,117,418
  4. Step 4: Simplify right side
    981,372x = 4,483,458,986,724
  5. Step 5: Solve for x
    x = 4,483,458,986,724/981,372
  6. Step 6: Final answer
    x = 4,568,562.16

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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.