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Finding the Third Proportional to 393,239 and 591,803

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Solution

The third proportional to 393,239 and 591,803 is: 890,630.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,239 : 591,803 = 591,803 : x
  2. Step 2: Convert to fraction form
    393,239/591,803 = 591,803/x
  3. Step 3: Cross multiply
    393,239x = 591,803 × 591,803
  4. Step 4: Simplify right side
    393,239x = 350,230,790,809
  5. Step 5: Solve for x
    x = 350,230,790,809/393,239
  6. Step 6: Final answer
    x = 890,630.87

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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.