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Finding the Third Proportional to 864,637 and 1,381,276

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Solution

The third proportional to 864,637 and 1,381,276 is: 2,206,617.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,637 : 1,381,276 = 1,381,276 : x
  2. Step 2: Convert to fraction form
    864,637/1,381,276 = 1,381,276/x
  3. Step 3: Cross multiply
    864,637x = 1,381,276 × 1,381,276
  4. Step 4: Simplify right side
    864,637x = 1,907,923,388,176
  5. Step 5: Solve for x
    x = 1,907,923,388,176/864,637
  6. Step 6: Final answer
    x = 2,206,617.79

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.