Home / 831,919.40-1,247,879.10-270,953.90

Finding the Fourth Proportional to 831,919.40, 1,247,879.10 and 270,953.90

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Solution

The fourth proportional to 831,919.40, 1,247,879.10 and 270,953.90 is: 406,430.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,919.40 : 1,247,879.10 = 270,953.90 : x
  2. Step 2: Convert to fraction form
    831,919.40/1,247,879.10 = 270,953.90/x
  3. Step 3: Cross multiply
    831,919.40x = 1,247,879.10 × 270,953.90
  4. Step 4: Simplify right side
    831,919.40x = 338,117,708,873.49
  5. Step 5: Solve for x
    x = 338,117,708,873.49/831,919.40
  6. Step 6: Final answer
    x = 406,430.85

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Half scale
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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.