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Finding the Third Proportional to 551,331 and 866,409

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Solution

The third proportional to 551,331 and 866,409 is: 1,361,549.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,331 : 866,409 = 866,409 : x
  2. Step 2: Convert to fraction form
    551,331/866,409 = 866,409/x
  3. Step 3: Cross multiply
    551,331x = 866,409 × 866,409
  4. Step 4: Simplify right side
    551,331x = 750,664,555,281
  5. Step 5: Solve for x
    x = 750,664,555,281/551,331
  6. Step 6: Final answer
    x = 1,361,549.70

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.