Home / 1,128,786.20-1,693,179.30-455,190.20

Finding the Fourth Proportional to 1,128,786.20, 1,693,179.30 and 455,190.20

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Solution

The fourth proportional to 1,128,786.20, 1,693,179.30 and 455,190.20 is: 682,785.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,786.20 : 1,693,179.30 = 455,190.20 : x
  2. Step 2: Convert to fraction form
    1,128,786.20/1,693,179.30 = 455,190.20/x
  3. Step 3: Cross multiply
    1,128,786.20x = 1,693,179.30 × 455,190.20
  4. Step 4: Simplify right side
    1,128,786.20x = 770,718,624,202.86
  5. Step 5: Solve for x
    x = 770,718,624,202.86/1,128,786.20
  6. Step 6: Final answer
    x = 682,785.30

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Double scale
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Similar ratio
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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.