Home / 721,809.80-1,082,811.90-248,640.20

Finding the Fourth Proportional to 721,809.80, 1,082,811.90 and 248,640.20

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Solution

The fourth proportional to 721,809.80, 1,082,811.90 and 248,640.20 is: 372,993.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,809.80 : 1,082,811.90 = 248,640.20 : x
  2. Step 2: Convert to fraction form
    721,809.80/1,082,811.90 = 248,640.20/x
  3. Step 3: Cross multiply
    721,809.80x = 1,082,811.90 × 248,640.20
  4. Step 4: Simplify right side
    721,809.80x = 269,230,567,378.38
  5. Step 5: Solve for x
    x = 269,230,567,378.38/721,809.80
  6. Step 6: Final answer
    x = 372,993.78

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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.