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Finding the Third Proportional to 643,846.50 and 1,399,639.50

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Solution

The third proportional to 643,846.50 and 1,399,639.50 is: 3,042,636.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,846.50 : 1,399,639.50 = 1,399,639.50 : x
  2. Step 2: Convert to fraction form
    643,846.50/1,399,639.50 = 1,399,639.50/x
  3. Step 3: Cross multiply
    643,846.50x = 1,399,639.50 × 1,399,639.50
  4. Step 4: Simplify right side
    643,846.50x = 1,958,990,729,960.25
  5. Step 5: Solve for x
    x = 1,958,990,729,960.25/643,846.50
  6. Step 6: Final answer
    x = 3,042,636.30

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Why These Related Problems?

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