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Finding the Third Proportional to 311,732 and 681,796

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Solution

The third proportional to 311,732 and 681,796 is: 1,491,171.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,732 : 681,796 = 681,796 : x
  2. Step 2: Convert to fraction form
    311,732/681,796 = 681,796/x
  3. Step 3: Cross multiply
    311,732x = 681,796 × 681,796
  4. Step 4: Simplify right side
    311,732x = 464,845,785,616
  5. Step 5: Solve for x
    x = 464,845,785,616/311,732
  6. Step 6: Final answer
    x = 1,491,171.22

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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.