Home / 800,115.20-1,104,306.72-513,992.96

Finding the Fourth Proportional to 800,115.20, 1,104,306.72 and 513,992.96

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Solution

The fourth proportional to 800,115.20, 1,104,306.72 and 513,992.96 is: 709,405.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,115.20 : 1,104,306.72 = 513,992.96 : x
  2. Step 2: Convert to fraction form
    800,115.20/1,104,306.72 = 513,992.96/x
  3. Step 3: Cross multiply
    800,115.20x = 1,104,306.72 × 513,992.96
  4. Step 4: Simplify right side
    800,115.20x = 567,605,879,760.69
  5. Step 5: Solve for x
    x = 567,605,879,760.69/800,115.20
  6. Step 6: Final answer
    x = 709,405.20

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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.