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Finding the Third Proportional to 621,855 and 1,318,441.50

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Solution

The third proportional to 621,855 and 1,318,441.50 is: 2,795,326.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,855 : 1,318,441.50 = 1,318,441.50 : x
  2. Step 2: Convert to fraction form
    621,855/1,318,441.50 = 1,318,441.50/x
  3. Step 3: Cross multiply
    621,855x = 1,318,441.50 × 1,318,441.50
  4. Step 4: Simplify right side
    621,855x = 1,738,287,988,922.25
  5. Step 5: Solve for x
    x = 1,738,287,988,922.25/621,855
  6. Step 6: Final answer
    x = 2,795,326.87

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.