Home / 2,188,376.40-3,281,009.40-990,872.40

Finding the Fourth Proportional to 2,188,376.40, 3,281,009.40 and 990,872.40

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Solution

The fourth proportional to 2,188,376.40, 3,281,009.40 and 990,872.40 is: 1,485,604.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,188,376.40 : 3,281,009.40 = 990,872.40 : x
  2. Step 2: Convert to fraction form
    2,188,376.40/3,281,009.40 = 990,872.40/x
  3. Step 3: Cross multiply
    2,188,376.40x = 3,281,009.40 × 990,872.40
  4. Step 4: Simplify right side
    2,188,376.40x = 3,251,061,658,600.56
  5. Step 5: Solve for x
    x = 3,251,061,658,600.56/2,188,376.40
  6. Step 6: Final answer
    x = 1,485,604.42

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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.