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Finding the Third Proportional to 679,269 and 999,216.75

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Solution

The third proportional to 679,269 and 999,216.75 is: 1,469,865.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,269 : 999,216.75 = 999,216.75 : x
  2. Step 2: Convert to fraction form
    679,269/999,216.75 = 999,216.75/x
  3. Step 3: Cross multiply
    679,269x = 999,216.75 × 999,216.75
  4. Step 4: Simplify right side
    679,269x = 998,434,113,480.56
  5. Step 5: Solve for x
    x = 998,434,113,480.56/679,269
  6. Step 6: Final answer
    x = 1,469,865.57

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.