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Finding the Fourth Proportional to 494,404.36, 682,291.45 and 279,576.56

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Solution

The fourth proportional to 494,404.36, 682,291.45 and 279,576.56 is: 385,823.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,404.36 : 682,291.45 = 279,576.56 : x
  2. Step 2: Convert to fraction form
    494,404.36/682,291.45 = 279,576.56/x
  3. Step 3: Cross multiply
    494,404.36x = 682,291.45 × 279,576.56
  4. Step 4: Simplify right side
    494,404.36x = 190,752,698,563.61
  5. Step 5: Solve for x
    x = 190,752,698,563.61/494,404.36
  6. Step 6: Final answer
    x = 385,823.26

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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.