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Finding the Third Proportional to 378,580.50 and 809,689.50

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Solution

The third proportional to 378,580.50 and 809,689.50 is: 1,731,724.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,580.50 : 809,689.50 = 809,689.50 : x
  2. Step 2: Convert to fraction form
    378,580.50/809,689.50 = 809,689.50/x
  3. Step 3: Cross multiply
    378,580.50x = 809,689.50 × 809,689.50
  4. Step 4: Simplify right side
    378,580.50x = 655,597,086,410.25
  5. Step 5: Solve for x
    x = 655,597,086,410.25/378,580.50
  6. Step 6: Final answer
    x = 1,731,724.39

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.