Home / 748,872.80-1,123,309.20-720,879.20

Finding the Fourth Proportional to 748,872.80, 1,123,309.20 and 720,879.20

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Solution

The fourth proportional to 748,872.80, 1,123,309.20 and 720,879.20 is: 1,081,318.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    748,872.80 : 1,123,309.20 = 720,879.20 : x
  2. Step 2: Convert to fraction form
    748,872.80/1,123,309.20 = 720,879.20/x
  3. Step 3: Cross multiply
    748,872.80x = 1,123,309.20 × 720,879.20
  4. Step 4: Simplify right side
    748,872.80x = 809,770,237,448.64
  5. Step 5: Solve for x
    x = 809,770,237,448.64/748,872.80
  6. Step 6: Final answer
    x = 1,081,318.80

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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.