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Finding the Third Proportional to 398,934 and 875,370

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Solution

The third proportional to 398,934 and 875,370 is: 1,920,800.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,934 : 875,370 = 875,370 : x
  2. Step 2: Convert to fraction form
    398,934/875,370 = 875,370/x
  3. Step 3: Cross multiply
    398,934x = 875,370 × 875,370
  4. Step 4: Simplify right side
    398,934x = 766,272,636,900
  5. Step 5: Solve for x
    x = 766,272,636,900/398,934
  6. Step 6: Final answer
    x = 1,920,800.53

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.