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Finding the Third Proportional to 428,162 and 666,754

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Solution

The third proportional to 428,162 and 666,754 is: 1,038,300.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,162 : 666,754 = 666,754 : x
  2. Step 2: Convert to fraction form
    428,162/666,754 = 666,754/x
  3. Step 3: Cross multiply
    428,162x = 666,754 × 666,754
  4. Step 4: Simplify right side
    428,162x = 444,560,896,516
  5. Step 5: Solve for x
    x = 444,560,896,516/428,162
  6. Step 6: Final answer
    x = 1,038,300.68

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.