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Finding the Third Proportional to 320,388.75 and 682,188.75

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Solution

The third proportional to 320,388.75 and 682,188.75 is: 1,452,552.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,388.75 : 682,188.75 = 682,188.75 : x
  2. Step 2: Convert to fraction form
    320,388.75/682,188.75 = 682,188.75/x
  3. Step 3: Cross multiply
    320,388.75x = 682,188.75 × 682,188.75
  4. Step 4: Simplify right side
    320,388.75x = 465,381,490,626.56
  5. Step 5: Solve for x
    x = 465,381,490,626.56/320,388.75
  6. Step 6: Final answer
    x = 1,452,552.53

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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.