Home / 993,989.80-1,491,233.10-320,134.60

Finding the Fourth Proportional to 993,989.80, 1,491,233.10 and 320,134.60

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Solution

The fourth proportional to 993,989.80, 1,491,233.10 and 320,134.60 is: 480,281.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,989.80 : 1,491,233.10 = 320,134.60 : x
  2. Step 2: Convert to fraction form
    993,989.80/1,491,233.10 = 320,134.60/x
  3. Step 3: Cross multiply
    993,989.80x = 1,491,233.10 × 320,134.60
  4. Step 4: Simplify right side
    993,989.80x = 477,395,311,975.26
  5. Step 5: Solve for x
    x = 477,395,311,975.26/993,989.80
  6. Step 6: Final answer
    x = 480,281.90

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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.