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Finding the Fourth Proportional to 494,321.56, 682,186.52 and 279,470.68

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Solution

The fourth proportional to 494,321.56, 682,186.52 and 279,470.68 is: 385,682.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,321.56 : 682,186.52 = 279,470.68 : x
  2. Step 2: Convert to fraction form
    494,321.56/682,186.52 = 279,470.68/x
  3. Step 3: Cross multiply
    494,321.56x = 682,186.52 × 279,470.68
  4. Step 4: Simplify right side
    494,321.56x = 190,651,130,631.23
  5. Step 5: Solve for x
    x = 190,651,130,631.23/494,321.56
  6. Step 6: Final answer
    x = 385,682.41

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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.