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Finding the Third Proportional to 868,371 and 1,311,631

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Solution

The third proportional to 868,371 and 1,311,631 is: 1,981,153.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,371 : 1,311,631 = 1,311,631 : x
  2. Step 2: Convert to fraction form
    868,371/1,311,631 = 1,311,631/x
  3. Step 3: Cross multiply
    868,371x = 1,311,631 × 1,311,631
  4. Step 4: Simplify right side
    868,371x = 1,720,375,880,161
  5. Step 5: Solve for x
    x = 1,720,375,880,161/868,371
  6. Step 6: Final answer
    x = 1,981,153.08

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.