Home / 990,361.80-1,366,704.90-582,480.78

Finding the Fourth Proportional to 990,361.80, 1,366,704.90 and 582,480.78

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Solution

The fourth proportional to 990,361.80, 1,366,704.90 and 582,480.78 is: 803,826.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,361.80 : 1,366,704.90 = 582,480.78 : x
  2. Step 2: Convert to fraction form
    990,361.80/1,366,704.90 = 582,480.78/x
  3. Step 3: Cross multiply
    990,361.80x = 1,366,704.90 × 582,480.78
  4. Step 4: Simplify right side
    990,361.80x = 796,079,336,181.82
  5. Step 5: Solve for x
    x = 796,079,336,181.82/990,361.80
  6. Step 6: Final answer
    x = 803,826.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.