Home / 990,183.87-1,485,400.86-280,212.14

Finding the Fourth Proportional to 990,183.87, 1,485,400.86 and 280,212.14

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Solution

The fourth proportional to 990,183.87, 1,485,400.86 and 280,212.14 is: 420,353.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,183.87 : 1,485,400.86 = 280,212.14 : x
  2. Step 2: Convert to fraction form
    990,183.87/1,485,400.86 = 280,212.14/x
  3. Step 3: Cross multiply
    990,183.87x = 1,485,400.86 × 280,212.14
  4. Step 4: Simplify right side
    990,183.87x = 416,227,357,451.94
  5. Step 5: Solve for x
    x = 416,227,357,451.94/990,183.87
  6. Step 6: Final answer
    x = 420,353.60

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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.