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Finding the Third Proportional to 311,702 and 681,722

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Solution

The third proportional to 311,702 and 681,722 is: 1,490,991.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,702 : 681,722 = 681,722 : x
  2. Step 2: Convert to fraction form
    311,702/681,722 = 681,722/x
  3. Step 3: Cross multiply
    311,702x = 681,722 × 681,722
  4. Step 4: Simplify right side
    311,702x = 464,744,885,284
  5. Step 5: Solve for x
    x = 464,744,885,284/311,702
  6. Step 6: Final answer
    x = 1,490,991.03

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.