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Finding the Third Proportional to 408,999 and 874,861

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Solution

The third proportional to 408,999 and 874,861 is: 1,871,353.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,999 : 874,861 = 874,861 : x
  2. Step 2: Convert to fraction form
    408,999/874,861 = 874,861/x
  3. Step 3: Cross multiply
    408,999x = 874,861 × 874,861
  4. Step 4: Simplify right side
    408,999x = 765,381,769,321
  5. Step 5: Solve for x
    x = 765,381,769,321/408,999
  6. Step 6: Final answer
    x = 1,871,353.64

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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.