Home / 990,173.36-1,485,338.52-280,205.84

Finding the Fourth Proportional to 990,173.36, 1,485,338.52 and 280,205.84

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Solution

The fourth proportional to 990,173.36, 1,485,338.52 and 280,205.84 is: 420,330.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,173.36 : 1,485,338.52 = 280,205.84 : x
  2. Step 2: Convert to fraction form
    990,173.36/1,485,338.52 = 280,205.84/x
  3. Step 3: Cross multiply
    990,173.36x = 1,485,338.52 × 280,205.84
  4. Step 4: Simplify right side
    990,173.36x = 416,200,527,680.96
  5. Step 5: Solve for x
    x = 416,200,527,680.96/990,173.36
  6. Step 6: Final answer
    x = 420,330.97

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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.