Home / 856,870.40-1,285,305.60-324,408.80

Finding the Fourth Proportional to 856,870.40, 1,285,305.60 and 324,408.80

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Solution

The fourth proportional to 856,870.40, 1,285,305.60 and 324,408.80 is: 486,613.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,870.40 : 1,285,305.60 = 324,408.80 : x
  2. Step 2: Convert to fraction form
    856,870.40/1,285,305.60 = 324,408.80/x
  3. Step 3: Cross multiply
    856,870.40x = 1,285,305.60 × 324,408.80
  4. Step 4: Simplify right side
    856,870.40x = 416,964,447,329.28
  5. Step 5: Solve for x
    x = 416,964,447,329.28/856,870.40
  6. Step 6: Final answer
    x = 486,613.20

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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.