Home / 831,520.80-1,247,281.20-270,555.30

Finding the Fourth Proportional to 831,520.80, 1,247,281.20 and 270,555.30

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Solution

The fourth proportional to 831,520.80, 1,247,281.20 and 270,555.30 is: 405,832.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,520.80 : 1,247,281.20 = 270,555.30 : x
  2. Step 2: Convert to fraction form
    831,520.80/1,247,281.20 = 270,555.30/x
  3. Step 3: Cross multiply
    831,520.80x = 1,247,281.20 × 270,555.30
  4. Step 4: Simplify right side
    831,520.80x = 337,458,539,250.36
  5. Step 5: Solve for x
    x = 337,458,539,250.36/831,520.80
  6. Step 6: Final answer
    x = 405,832.95

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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.