Home / 763,414.80-1,144,200.60-389,245.20

Finding the Fourth Proportional to 763,414.80, 1,144,200.60 and 389,245.20

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Solution

The fourth proportional to 763,414.80, 1,144,200.60 and 389,245.20 is: 583,397.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,414.80 : 1,144,200.60 = 389,245.20 : x
  2. Step 2: Convert to fraction form
    763,414.80/1,144,200.60 = 389,245.20/x
  3. Step 3: Cross multiply
    763,414.80x = 1,144,200.60 × 389,245.20
  4. Step 4: Simplify right side
    763,414.80x = 445,374,591,387.12
  5. Step 5: Solve for x
    x = 445,374,591,387.12/763,414.80
  6. Step 6: Final answer
    x = 583,397.90

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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.