Home / 2,188,246.90-3,280,815.15-990,742.90

Finding the Fourth Proportional to 2,188,246.90, 3,280,815.15 and 990,742.90

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Solution

The fourth proportional to 2,188,246.90, 3,280,815.15 and 990,742.90 is: 1,485,410.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,188,246.90 : 3,280,815.15 = 990,742.90 : x
  2. Step 2: Convert to fraction form
    2,188,246.90/3,280,815.15 = 990,742.90/x
  3. Step 3: Cross multiply
    2,188,246.90x = 3,280,815.15 × 990,742.90
  4. Step 4: Simplify right side
    2,188,246.90x = 3,250,444,316,074.94
  5. Step 5: Solve for x
    x = 3,250,444,316,074.94/2,188,246.90
  6. Step 6: Final answer
    x = 1,485,410.22

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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.