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Finding the Third Proportional to 393,649 and 590,370

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Solution

The third proportional to 393,649 and 590,370 is: 885,399.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,649 : 590,370 = 590,370 : x
  2. Step 2: Convert to fraction form
    393,649/590,370 = 590,370/x
  3. Step 3: Cross multiply
    393,649x = 590,370 × 590,370
  4. Step 4: Simplify right side
    393,649x = 348,536,736,900
  5. Step 5: Solve for x
    x = 348,536,736,900/393,649
  6. Step 6: Final answer
    x = 885,399.78

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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.