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Finding the Third Proportional to 284,562 and 428,719

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Solution

The third proportional to 284,562 and 428,719 is: 645,904.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,562 : 428,719 = 428,719 : x
  2. Step 2: Convert to fraction form
    284,562/428,719 = 428,719/x
  3. Step 3: Cross multiply
    284,562x = 428,719 × 428,719
  4. Step 4: Simplify right side
    284,562x = 183,799,980,961
  5. Step 5: Solve for x
    x = 183,799,980,961/284,562
  6. Step 6: Final answer
    x = 645,904.87

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.