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Finding the Third Proportional to 393,858 and 590,665

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Solution

The third proportional to 393,858 and 590,665 is: 885,814.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,858 : 590,665 = 590,665 : x
  2. Step 2: Convert to fraction form
    393,858/590,665 = 590,665/x
  3. Step 3: Cross multiply
    393,858x = 590,665 × 590,665
  4. Step 4: Simplify right side
    393,858x = 348,885,142,225
  5. Step 5: Solve for x
    x = 348,885,142,225/393,858
  6. Step 6: Final answer
    x = 885,814.54

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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.