Home / 678,021.04-1,016,637.72-257,067.28

Finding the Fourth Proportional to 678,021.04, 1,016,637.72 and 257,067.28

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Solution

The fourth proportional to 678,021.04, 1,016,637.72 and 257,067.28 is: 385,451.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,021.04 : 1,016,637.72 = 257,067.28 : x
  2. Step 2: Convert to fraction form
    678,021.04/1,016,637.72 = 257,067.28/x
  3. Step 3: Cross multiply
    678,021.04x = 1,016,637.72 × 257,067.28
  4. Step 4: Simplify right side
    678,021.04x = 261,344,293,425.80
  5. Step 5: Solve for x
    x = 261,344,293,425.80/678,021.04
  6. Step 6: Final answer
    x = 385,451.60

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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.