Home / 491,778.14-678,674.70-273,986.63

Finding the Fourth Proportional to 491,778.14, 678,674.70 and 273,986.63

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Solution

The fourth proportional to 491,778.14, 678,674.70 and 273,986.63 is: 378,113.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,778.14 : 678,674.70 = 273,986.63 : x
  2. Step 2: Convert to fraction form
    491,778.14/678,674.70 = 273,986.63/x
  3. Step 3: Cross multiply
    491,778.14x = 678,674.70 × 273,986.63
  4. Step 4: Simplify right side
    491,778.14x = 185,947,793,919.26
  5. Step 5: Solve for x
    x = 185,947,793,919.26/491,778.14
  6. Step 6: Final answer
    x = 378,113.18

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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.