Home / 840,198.80-1,260,298.20-279,233.30

Finding the Fourth Proportional to 840,198.80, 1,260,298.20 and 279,233.30

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Solution

The fourth proportional to 840,198.80, 1,260,298.20 and 279,233.30 is: 418,849.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,198.80 : 1,260,298.20 = 279,233.30 : x
  2. Step 2: Convert to fraction form
    840,198.80/1,260,298.20 = 279,233.30/x
  3. Step 3: Cross multiply
    840,198.80x = 1,260,298.20 × 279,233.30
  4. Step 4: Simplify right side
    840,198.80x = 351,917,225,370.06
  5. Step 5: Solve for x
    x = 351,917,225,370.06/840,198.80
  6. Step 6: Final answer
    x = 418,849.95

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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.