Home / 990,372.35-1,485,616.88-280,340.93

Finding the Fourth Proportional to 990,372.35, 1,485,616.88 and 280,340.93

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Solution

The fourth proportional to 990,372.35, 1,485,616.88 and 280,340.93 is: 420,527.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,372.35 : 1,485,616.88 = 280,340.93 : x
  2. Step 2: Convert to fraction form
    990,372.35/1,485,616.88 = 280,340.93/x
  3. Step 3: Cross multiply
    990,372.35x = 1,485,616.88 × 280,340.93
  4. Step 4: Simplify right side
    990,372.35x = 416,479,216,606.73
  5. Step 5: Solve for x
    x = 416,479,216,606.73/990,372.35
  6. Step 6: Final answer
    x = 420,527.91

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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.