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Finding the Third Proportional to 471,678 and 666,785.25

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Solution

The third proportional to 471,678 and 666,785.25 is: 942,597.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,678 : 666,785.25 = 666,785.25 : x
  2. Step 2: Convert to fraction form
    471,678/666,785.25 = 666,785.25/x
  3. Step 3: Cross multiply
    471,678x = 666,785.25 × 666,785.25
  4. Step 4: Simplify right side
    471,678x = 444,602,569,617.56
  5. Step 5: Solve for x
    x = 444,602,569,617.56/471,678
  6. Step 6: Final answer
    x = 942,597.64

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.