Home / 664,550.80-996,826.20-486,091.60

Finding the Fourth Proportional to 664,550.80, 996,826.20 and 486,091.60

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Solution

The fourth proportional to 664,550.80, 996,826.20 and 486,091.60 is: 729,137.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,550.80 : 996,826.20 = 486,091.60 : x
  2. Step 2: Convert to fraction form
    664,550.80/996,826.20 = 486,091.60/x
  3. Step 3: Cross multiply
    664,550.80x = 996,826.20 × 486,091.60
  4. Step 4: Simplify right side
    664,550.80x = 484,548,842,479.92
  5. Step 5: Solve for x
    x = 484,548,842,479.92/664,550.80
  6. Step 6: Final answer
    x = 729,137.40

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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.