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Finding the Third Proportional to 418,091 and 617,295

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Solution

The third proportional to 418,091 and 617,295 is: 911,411.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,091 : 617,295 = 617,295 : x
  2. Step 2: Convert to fraction form
    418,091/617,295 = 617,295/x
  3. Step 3: Cross multiply
    418,091x = 617,295 × 617,295
  4. Step 4: Simplify right side
    418,091x = 381,053,117,025
  5. Step 5: Solve for x
    x = 381,053,117,025/418,091
  6. Step 6: Final answer
    x = 911,411.91

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.