Home / 494,223.70-682,021.30-279,356.20

Finding the Fourth Proportional to 494,223.70, 682,021.30 and 279,356.20

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Solution

The fourth proportional to 494,223.70, 682,021.30 and 279,356.20 is: 385,507.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,223.70 : 682,021.30 = 279,356.20 : x
  2. Step 2: Convert to fraction form
    494,223.70/682,021.30 = 279,356.20/x
  3. Step 3: Cross multiply
    494,223.70x = 682,021.30 × 279,356.20
  4. Step 4: Simplify right side
    494,223.70x = 190,526,878,687.06
  5. Step 5: Solve for x
    x = 190,526,878,687.06/494,223.70
  6. Step 6: Final answer
    x = 385,507.37

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1.5x scale

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.