Home / 494,899.70-682,976.72-290,913.20

Finding the Fourth Proportional to 494,899.70, 682,976.72 and 290,913.20

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Solution

The fourth proportional to 494,899.70, 682,976.72 and 290,913.20 is: 401,469.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,899.70 : 682,976.72 = 290,913.20 : x
  2. Step 2: Convert to fraction form
    494,899.70/682,976.72 = 290,913.20/x
  3. Step 3: Cross multiply
    494,899.70x = 682,976.72 × 290,913.20
  4. Step 4: Simplify right side
    494,899.70x = 198,686,940,453.10
  5. Step 5: Solve for x
    x = 198,686,940,453.10/494,899.70
  6. Step 6: Final answer
    x = 401,469.10

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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.