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Finding the Third Proportional to 398,578 and 592,189

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Solution

The third proportional to 398,578 and 592,189 is: 879,847.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,578 : 592,189 = 592,189 : x
  2. Step 2: Convert to fraction form
    398,578/592,189 = 592,189/x
  3. Step 3: Cross multiply
    398,578x = 592,189 × 592,189
  4. Step 4: Simplify right side
    398,578x = 350,687,811,721
  5. Step 5: Solve for x
    x = 350,687,811,721/398,578
  6. Step 6: Final answer
    x = 879,847.39

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.