Home / 827,279.40-1,240,919.10-266,313.90

Finding the Fourth Proportional to 827,279.40, 1,240,919.10 and 266,313.90

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Solution

The fourth proportional to 827,279.40, 1,240,919.10 and 266,313.90 is: 399,470.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,279.40 : 1,240,919.10 = 266,313.90 : x
  2. Step 2: Convert to fraction form
    827,279.40/1,240,919.10 = 266,313.90/x
  3. Step 3: Cross multiply
    827,279.40x = 1,240,919.10 × 266,313.90
  4. Step 4: Simplify right side
    827,279.40x = 330,474,005,105.49
  5. Step 5: Solve for x
    x = 330,474,005,105.49/827,279.40
  6. Step 6: Final answer
    x = 399,470.85

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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.