Home / 990,203.36-1,485,383.52-280,235.84

Finding the Fourth Proportional to 990,203.36, 1,485,383.52 and 280,235.84

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Solution

The fourth proportional to 990,203.36, 1,485,383.52 and 280,235.84 is: 420,375.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,203.36 : 1,485,383.52 = 280,235.84 : x
  2. Step 2: Convert to fraction form
    990,203.36/1,485,383.52 = 280,235.84/x
  3. Step 3: Cross multiply
    990,203.36x = 1,485,383.52 × 280,235.84
  4. Step 4: Simplify right side
    990,203.36x = 416,257,698,449.36
  5. Step 5: Solve for x
    x = 416,257,698,449.36/990,203.36
  6. Step 6: Final answer
    x = 420,375.97

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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.