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Finding the Third Proportional to 438,509.75 and 655,976.75

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Solution

The third proportional to 438,509.75 and 655,976.75 is: 981,290.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,509.75 : 655,976.75 = 655,976.75 : x
  2. Step 2: Convert to fraction form
    438,509.75/655,976.75 = 655,976.75/x
  3. Step 3: Cross multiply
    438,509.75x = 655,976.75 × 655,976.75
  4. Step 4: Simplify right side
    438,509.75x = 430,305,496,540.56
  5. Step 5: Solve for x
    x = 430,305,496,540.56/438,509.75
  6. Step 6: Final answer
    x = 981,290.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.