Home / 680,187.40-1,019,114.70-443,408.20

Finding the Fourth Proportional to 680,187.40, 1,019,114.70 and 443,408.20

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Solution

The fourth proportional to 680,187.40, 1,019,114.70 and 443,408.20 is: 664,351.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,187.40 : 1,019,114.70 = 443,408.20 : x
  2. Step 2: Convert to fraction form
    680,187.40/1,019,114.70 = 443,408.20/x
  3. Step 3: Cross multiply
    680,187.40x = 1,019,114.70 × 443,408.20
  4. Step 4: Simplify right side
    680,187.40x = 451,883,814,720.54
  5. Step 5: Solve for x
    x = 451,883,814,720.54/680,187.40
  6. Step 6: Final answer
    x = 664,351.93

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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.