Home / 491,786.24-678,646.76-273,989.79

Finding the Fourth Proportional to 491,786.24, 678,646.76 and 273,989.79

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Solution

The fourth proportional to 491,786.24, 678,646.76 and 273,989.79 is: 378,095.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,786.24 : 678,646.76 = 273,989.79 : x
  2. Step 2: Convert to fraction form
    491,786.24/678,646.76 = 273,989.79/x
  3. Step 3: Cross multiply
    491,786.24x = 678,646.76 × 273,989.79
  4. Step 4: Simplify right side
    491,786.24x = 185,942,281,886.63
  5. Step 5: Solve for x
    x = 185,942,281,886.63/491,786.24
  6. Step 6: Final answer
    x = 378,095.74

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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.