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Finding the Third Proportional to 642,228 and 1,411,576

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Solution

The third proportional to 642,228 and 1,411,576 is: 3,102,553.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,228 : 1,411,576 = 1,411,576 : x
  2. Step 2: Convert to fraction form
    642,228/1,411,576 = 1,411,576/x
  3. Step 3: Cross multiply
    642,228x = 1,411,576 × 1,411,576
  4. Step 4: Simplify right side
    642,228x = 1,992,546,803,776
  5. Step 5: Solve for x
    x = 1,992,546,803,776/642,228
  6. Step 6: Final answer
    x = 3,102,553.62

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.