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Finding the Third Proportional to 289,834 and 618,186

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Solution

The third proportional to 289,834 and 618,186 is: 1,318,526.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,834 : 618,186 = 618,186 : x
  2. Step 2: Convert to fraction form
    289,834/618,186 = 618,186/x
  3. Step 3: Cross multiply
    289,834x = 618,186 × 618,186
  4. Step 4: Simplify right side
    289,834x = 382,153,930,596
  5. Step 5: Solve for x
    x = 382,153,930,596/289,834
  6. Step 6: Final answer
    x = 1,318,526.92

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.