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Finding the Third Proportional to 262,620 and 418,074

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Solution

The third proportional to 262,620 and 418,074 is: 665,546.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,620 : 418,074 = 418,074 : x
  2. Step 2: Convert to fraction form
    262,620/418,074 = 418,074/x
  3. Step 3: Cross multiply
    262,620x = 418,074 × 418,074
  4. Step 4: Simplify right side
    262,620x = 174,785,869,476
  5. Step 5: Solve for x
    x = 174,785,869,476/262,620
  6. Step 6: Final answer
    x = 665,546.68

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.