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Finding the Third Proportional to 428,715 and 914,373

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Solution

The third proportional to 428,715 and 914,373 is: 1,950,195.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,715 : 914,373 = 914,373 : x
  2. Step 2: Convert to fraction form
    428,715/914,373 = 914,373/x
  3. Step 3: Cross multiply
    428,715x = 914,373 × 914,373
  4. Step 4: Simplify right side
    428,715x = 836,077,983,129
  5. Step 5: Solve for x
    x = 836,077,983,129/428,715
  6. Step 6: Final answer
    x = 1,950,195.31

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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.