Home / 867,854.20-1,301,198.10-394,295.80

Finding the Fourth Proportional to 867,854.20, 1,301,198.10 and 394,295.80

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Solution

The fourth proportional to 867,854.20, 1,301,198.10 and 394,295.80 is: 591,178.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,854.20 : 1,301,198.10 = 394,295.80 : x
  2. Step 2: Convert to fraction form
    867,854.20/1,301,198.10 = 394,295.80/x
  3. Step 3: Cross multiply
    867,854.20x = 1,301,198.10 × 394,295.80
  4. Step 4: Simplify right side
    867,854.20x = 513,056,945,797.98
  5. Step 5: Solve for x
    x = 513,056,945,797.98/867,854.20
  6. Step 6: Final answer
    x = 591,178.73

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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.