Home / 812,786.52-1,121,633.55-450,209.19

Finding the Fourth Proportional to 812,786.52, 1,121,633.55 and 450,209.19

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Solution

The fourth proportional to 812,786.52, 1,121,633.55 and 450,209.19 is: 621,282.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,786.52 : 1,121,633.55 = 450,209.19 : x
  2. Step 2: Convert to fraction form
    812,786.52/1,121,633.55 = 450,209.19/x
  3. Step 3: Cross multiply
    812,786.52x = 1,121,633.55 × 450,209.19
  4. Step 4: Simplify right side
    812,786.52x = 504,969,732,022.33
  5. Step 5: Solve for x
    x = 504,969,732,022.33/812,786.52
  6. Step 6: Final answer
    x = 621,282.12

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Double scale
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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.