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Finding the Third Proportional to 326,986 and 698,324

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Solution

The third proportional to 326,986 and 698,324 is: 1,491,367.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,986 : 698,324 = 698,324 : x
  2. Step 2: Convert to fraction form
    326,986/698,324 = 698,324/x
  3. Step 3: Cross multiply
    326,986x = 698,324 × 698,324
  4. Step 4: Simplify right side
    326,986x = 487,656,408,976
  5. Step 5: Solve for x
    x = 487,656,408,976/326,986
  6. Step 6: Final answer
    x = 1,491,367.85

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.