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Finding the Third Proportional to 640,876.50 and 1,364,589

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Solution

The third proportional to 640,876.50 and 1,364,589 is: 2,905,556.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,876.50 : 1,364,589 = 1,364,589 : x
  2. Step 2: Convert to fraction form
    640,876.50/1,364,589 = 1,364,589/x
  3. Step 3: Cross multiply
    640,876.50x = 1,364,589 × 1,364,589
  4. Step 4: Simplify right side
    640,876.50x = 1,862,103,138,921
  5. Step 5: Solve for x
    x = 1,862,103,138,921/640,876.50
  6. Step 6: Final answer
    x = 2,905,556.90

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.