Home / 679,520.55-1,019,286.96-206,205.90

Finding the Fourth Proportional to 679,520.55, 1,019,286.96 and 206,205.90

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Solution

The fourth proportional to 679,520.55, 1,019,286.96 and 206,205.90 is: 309,310.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,520.55 : 1,019,286.96 = 206,205.90 : x
  2. Step 2: Convert to fraction form
    679,520.55/1,019,286.96 = 206,205.90/x
  3. Step 3: Cross multiply
    679,520.55x = 1,019,286.96 × 206,205.90
  4. Step 4: Simplify right side
    679,520.55x = 210,182,984,945.06
  5. Step 5: Solve for x
    x = 210,182,984,945.06/679,520.55
  6. Step 6: Final answer
    x = 309,310.71

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1.5x scale

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.