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Finding the Third Proportional to 721,378 and 1,567,172

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Solution

The third proportional to 721,378 and 1,567,172 is: 3,404,634.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,378 : 1,567,172 = 1,567,172 : x
  2. Step 2: Convert to fraction form
    721,378/1,567,172 = 1,567,172/x
  3. Step 3: Cross multiply
    721,378x = 1,567,172 × 1,567,172
  4. Step 4: Simplify right side
    721,378x = 2,456,028,077,584
  5. Step 5: Solve for x
    x = 2,456,028,077,584/721,378
  6. Step 6: Final answer
    x = 3,404,634.02

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