Home / 481,379.13-664,447.20-311,624.73

Finding the Fourth Proportional to 481,379.13, 664,447.20 and 311,624.73

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Solution

The fourth proportional to 481,379.13, 664,447.20 and 311,624.73 is: 430,135.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,379.13 : 664,447.20 = 311,624.73 : x
  2. Step 2: Convert to fraction form
    481,379.13/664,447.20 = 311,624.73/x
  3. Step 3: Cross multiply
    481,379.13x = 664,447.20 × 311,624.73
  4. Step 4: Simplify right side
    481,379.13x = 207,058,179,299.26
  5. Step 5: Solve for x
    x = 207,058,179,299.26/481,379.13
  6. Step 6: Final answer
    x = 430,135.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.