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Finding the Third Proportional to 389,508.50 and 582,705.75

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Solution

The third proportional to 389,508.50 and 582,705.75 is: 871,729.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,508.50 : 582,705.75 = 582,705.75 : x
  2. Step 2: Convert to fraction form
    389,508.50/582,705.75 = 582,705.75/x
  3. Step 3: Cross multiply
    389,508.50x = 582,705.75 × 582,705.75
  4. Step 4: Simplify right side
    389,508.50x = 339,545,991,083.06
  5. Step 5: Solve for x
    x = 339,545,991,083.06/389,508.50
  6. Step 6: Final answer
    x = 871,729.35

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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.