Home / 990,400.11-1,366,757.87-582,519.21

Finding the Fourth Proportional to 990,400.11, 1,366,757.87 and 582,519.21

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Solution

The fourth proportional to 990,400.11, 1,366,757.87 and 582,519.21 is: 803,879.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,400.11 : 1,366,757.87 = 582,519.21 : x
  2. Step 2: Convert to fraction form
    990,400.11/1,366,757.87 = 582,519.21/x
  3. Step 3: Cross multiply
    990,400.11x = 1,366,757.87 × 582,519.21
  4. Step 4: Simplify right side
    990,400.11x = 796,162,711,781.09
  5. Step 5: Solve for x
    x = 796,162,711,781.09/990,400.11
  6. Step 6: Final answer
    x = 803,879.87

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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.