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Finding the Third Proportional to 297,599 and 642,243

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Solution

The third proportional to 297,599 and 642,243 is: 1,386,012.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,599 : 642,243 = 642,243 : x
  2. Step 2: Convert to fraction form
    297,599/642,243 = 642,243/x
  3. Step 3: Cross multiply
    297,599x = 642,243 × 642,243
  4. Step 4: Simplify right side
    297,599x = 412,476,071,049
  5. Step 5: Solve for x
    x = 412,476,071,049/297,599
  6. Step 6: Final answer
    x = 1,386,012.96

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.