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Finding the Third Proportional to 407,517 and 890,759

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Solution

The third proportional to 407,517 and 890,759 is: 1,947,039.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,517 : 890,759 = 890,759 : x
  2. Step 2: Convert to fraction form
    407,517/890,759 = 890,759/x
  3. Step 3: Cross multiply
    407,517x = 890,759 × 890,759
  4. Step 4: Simplify right side
    407,517x = 793,451,596,081
  5. Step 5: Solve for x
    x = 793,451,596,081/407,517
  6. Step 6: Final answer
    x = 1,947,039.26

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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.