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Finding the Third Proportional to 419,491 and 629,281.50

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Solution

The third proportional to 419,491 and 629,281.50 is: 943,989.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,491 : 629,281.50 = 629,281.50 : x
  2. Step 2: Convert to fraction form
    419,491/629,281.50 = 629,281.50/x
  3. Step 3: Cross multiply
    419,491x = 629,281.50 × 629,281.50
  4. Step 4: Simplify right side
    419,491x = 395,995,206,242.25
  5. Step 5: Solve for x
    x = 395,995,206,242.25/419,491
  6. Step 6: Final answer
    x = 943,989.75

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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.