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Finding the Third Proportional to 289,787 and 622,424

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Solution

The third proportional to 289,787 and 622,424 is: 1,336,884.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,787 : 622,424 = 622,424 : x
  2. Step 2: Convert to fraction form
    289,787/622,424 = 622,424/x
  3. Step 3: Cross multiply
    289,787x = 622,424 × 622,424
  4. Step 4: Simplify right side
    289,787x = 387,411,635,776
  5. Step 5: Solve for x
    x = 387,411,635,776/289,787
  6. Step 6: Final answer
    x = 1,336,884.11

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.