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Finding the Third Proportional to 256,502 and 556,812

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Solution

The third proportional to 256,502 and 556,812 is: 1,208,721.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,502 : 556,812 = 556,812 : x
  2. Step 2: Convert to fraction form
    256,502/556,812 = 556,812/x
  3. Step 3: Cross multiply
    256,502x = 556,812 × 556,812
  4. Step 4: Simplify right side
    256,502x = 310,039,603,344
  5. Step 5: Solve for x
    x = 310,039,603,344/256,502
  6. Step 6: Final answer
    x = 1,208,721.97

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.