Home / 678,067.36-1,017,055.92-278,604.64

Finding the Fourth Proportional to 678,067.36, 1,017,055.92 and 278,604.64

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Solution

The fourth proportional to 678,067.36, 1,017,055.92 and 278,604.64 is: 417,888.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,067.36 : 1,017,055.92 = 278,604.64 : x
  2. Step 2: Convert to fraction form
    678,067.36/1,017,055.92 = 278,604.64/x
  3. Step 3: Cross multiply
    678,067.36x = 1,017,055.92 × 278,604.64
  4. Step 4: Simplify right side
    678,067.36x = 283,356,498,451.47
  5. Step 5: Solve for x
    x = 283,356,498,451.47/678,067.36
  6. Step 6: Final answer
    x = 417,888.42

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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.