Home / 990,171.36-1,485,335.52-280,203.84

Finding the Fourth Proportional to 990,171.36, 1,485,335.52 and 280,203.84

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Solution

The fourth proportional to 990,171.36, 1,485,335.52 and 280,203.84 is: 420,327.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,171.36 : 1,485,335.52 = 280,203.84 : x
  2. Step 2: Convert to fraction form
    990,171.36/1,485,335.52 = 280,203.84/x
  3. Step 3: Cross multiply
    990,171.36x = 1,485,335.52 × 280,203.84
  4. Step 4: Simplify right side
    990,171.36x = 416,196,716,392.40
  5. Step 5: Solve for x
    x = 416,196,716,392.40/990,171.36
  6. Step 6: Final answer
    x = 420,327.97

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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.