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Finding the Third Proportional to 199,578 and 426,828

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Solution

The third proportional to 199,578 and 426,828 is: 912,836.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,578 : 426,828 = 426,828 : x
  2. Step 2: Convert to fraction form
    199,578/426,828 = 426,828/x
  3. Step 3: Cross multiply
    199,578x = 426,828 × 426,828
  4. Step 4: Simplify right side
    199,578x = 182,182,141,584
  5. Step 5: Solve for x
    x = 182,182,141,584/199,578
  6. Step 6: Final answer
    x = 912,836.79

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.