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Finding the Third Proportional to 669,418 and 936,312

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Solution

The third proportional to 669,418 and 936,312 is: 1,309,615.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,418 : 936,312 = 936,312 : x
  2. Step 2: Convert to fraction form
    669,418/936,312 = 936,312/x
  3. Step 3: Cross multiply
    669,418x = 936,312 × 936,312
  4. Step 4: Simplify right side
    669,418x = 876,680,161,344
  5. Step 5: Solve for x
    x = 876,680,161,344/669,418
  6. Step 6: Final answer
    x = 1,309,615.46

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.