Home / 678,686.82-1,016,479.89-323,950.56

Finding the Fourth Proportional to 678,686.82, 1,016,479.89 and 323,950.56

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Solution

The fourth proportional to 678,686.82, 1,016,479.89 and 323,950.56 is: 485,185.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,686.82 : 1,016,479.89 = 323,950.56 : x
  2. Step 2: Convert to fraction form
    678,686.82/1,016,479.89 = 323,950.56/x
  3. Step 3: Cross multiply
    678,686.82x = 1,016,479.89 × 323,950.56
  4. Step 4: Simplify right side
    678,686.82x = 329,289,229,594.24
  5. Step 5: Solve for x
    x = 329,289,229,594.24/678,686.82
  6. Step 6: Final answer
    x = 485,185.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.