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Finding the Third Proportional to 311,940 and 434,626

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Solution

The third proportional to 311,940 and 434,626 is: 605,564.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,940 : 434,626 = 434,626 : x
  2. Step 2: Convert to fraction form
    311,940/434,626 = 434,626/x
  3. Step 3: Cross multiply
    311,940x = 434,626 × 434,626
  4. Step 4: Simplify right side
    311,940x = 188,899,759,876
  5. Step 5: Solve for x
    x = 188,899,759,876/311,940
  6. Step 6: Final answer
    x = 605,564.40

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.