Home / 721,517.38-996,000.67-449,720.66

Finding the Fourth Proportional to 721,517.38, 996,000.67 and 449,720.66

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Solution

The fourth proportional to 721,517.38, 996,000.67 and 449,720.66 is: 620,805.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,517.38 : 996,000.67 = 449,720.66 : x
  2. Step 2: Convert to fraction form
    721,517.38/996,000.67 = 449,720.66/x
  3. Step 3: Cross multiply
    721,517.38x = 996,000.67 × 449,720.66
  4. Step 4: Simplify right side
    721,517.38x = 447,922,081,725.00
  5. Step 5: Solve for x
    x = 447,922,081,725.00/721,517.38
  6. Step 6: Final answer
    x = 620,805.67

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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.