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Finding the Third Proportional to 420,250.50 and 628,888.50

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Solution

The third proportional to 420,250.50 and 628,888.50 is: 941,107.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,250.50 : 628,888.50 = 628,888.50 : x
  2. Step 2: Convert to fraction form
    420,250.50/628,888.50 = 628,888.50/x
  3. Step 3: Cross multiply
    420,250.50x = 628,888.50 × 628,888.50
  4. Step 4: Simplify right side
    420,250.50x = 395,500,745,432.25
  5. Step 5: Solve for x
    x = 395,500,745,432.25/420,250.50
  6. Step 6: Final answer
    x = 941,107.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.