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Finding the Third Proportional to 283,809 and 426,909

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Solution

The third proportional to 283,809 and 426,909 is: 642,161.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,809 : 426,909 = 426,909 : x
  2. Step 2: Convert to fraction form
    283,809/426,909 = 426,909/x
  3. Step 3: Cross multiply
    283,809x = 426,909 × 426,909
  4. Step 4: Simplify right side
    283,809x = 182,251,294,281
  5. Step 5: Solve for x
    x = 182,251,294,281/283,809
  6. Step 6: Final answer
    x = 642,161.79

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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.