Home / 678,018.51-1,016,633.97-257,064.75

Finding the Fourth Proportional to 678,018.51, 1,016,633.97 and 257,064.75

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Solution

The fourth proportional to 678,018.51, 1,016,633.97 and 257,064.75 is: 385,447.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,018.51 : 1,016,633.97 = 257,064.75 : x
  2. Step 2: Convert to fraction form
    678,018.51/1,016,633.97 = 257,064.75/x
  3. Step 3: Cross multiply
    678,018.51x = 1,016,633.97 × 257,064.75
  4. Step 4: Simplify right side
    678,018.51x = 261,340,757,339.56
  5. Step 5: Solve for x
    x = 261,340,757,339.56/678,018.51
  6. Step 6: Final answer
    x = 385,447.82

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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.