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Finding the Third Proportional to 820,476 and 1,241,670

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Solution

The third proportional to 820,476 and 1,241,670 is: 1,879,085.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,476 : 1,241,670 = 1,241,670 : x
  2. Step 2: Convert to fraction form
    820,476/1,241,670 = 1,241,670/x
  3. Step 3: Cross multiply
    820,476x = 1,241,670 × 1,241,670
  4. Step 4: Simplify right side
    820,476x = 1,541,744,388,900
  5. Step 5: Solve for x
    x = 1,541,744,388,900/820,476
  6. Step 6: Final answer
    x = 1,879,085.30

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.