Home / 1,100,550.80-1,650,826.20-781,686.20

Finding the Fourth Proportional to 1,100,550.80, 1,650,826.20 and 781,686.20

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Solution

The fourth proportional to 1,100,550.80, 1,650,826.20 and 781,686.20 is: 1,172,529.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,100,550.80 : 1,650,826.20 = 781,686.20 : x
  2. Step 2: Convert to fraction form
    1,100,550.80/1,650,826.20 = 781,686.20/x
  3. Step 3: Cross multiply
    1,100,550.80x = 1,650,826.20 × 781,686.20
  4. Step 4: Simplify right side
    1,100,550.80x = 1,290,428,059,138.44
  5. Step 5: Solve for x
    x = 1,290,428,059,138.44/1,100,550.80
  6. Step 6: Final answer
    x = 1,172,529.30

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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.