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Finding the Third Proportional to 627,455.25 and 1,287,978.75

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Solution

The third proportional to 627,455.25 and 1,287,978.75 is: 2,643,836.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,455.25 : 1,287,978.75 = 1,287,978.75 : x
  2. Step 2: Convert to fraction form
    627,455.25/1,287,978.75 = 1,287,978.75/x
  3. Step 3: Cross multiply
    627,455.25x = 1,287,978.75 × 1,287,978.75
  4. Step 4: Simplify right side
    627,455.25x = 1,658,889,260,451.56
  5. Step 5: Solve for x
    x = 1,658,889,260,451.56/627,455.25
  6. Step 6: Final answer
    x = 2,643,836.77

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.