Home / 990,175.24-1,485,319.80-280,143.76

Finding the Fourth Proportional to 990,175.24, 1,485,319.80 and 280,143.76

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Solution

The fourth proportional to 990,175.24, 1,485,319.80 and 280,143.76 is: 420,231.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,175.24 : 1,485,319.80 = 280,143.76 : x
  2. Step 2: Convert to fraction form
    990,175.24/1,485,319.80 = 280,143.76/x
  3. Step 3: Cross multiply
    990,175.24x = 1,485,319.80 × 280,143.76
  4. Step 4: Simplify right side
    990,175.24x = 416,103,073,574.45
  5. Step 5: Solve for x
    x = 416,103,073,574.45/990,175.24
  6. Step 6: Final answer
    x = 420,231.75

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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.