Home / 2,188,378.40-3,281,012.40-990,874.40

Finding the Fourth Proportional to 2,188,378.40, 3,281,012.40 and 990,874.40

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Solution

The fourth proportional to 2,188,378.40, 3,281,012.40 and 990,874.40 is: 1,485,607.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,188,378.40 : 3,281,012.40 = 990,874.40 : x
  2. Step 2: Convert to fraction form
    2,188,378.40/3,281,012.40 = 990,874.40/x
  3. Step 3: Cross multiply
    2,188,378.40x = 3,281,012.40 × 990,874.40
  4. Step 4: Simplify right side
    2,188,378.40x = 3,251,071,193,242.56
  5. Step 5: Solve for x
    x = 3,251,071,193,242.56/2,188,378.40
  6. Step 6: Final answer
    x = 1,485,607.42

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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.