Home / 669,067.39-923,326.75-378,678.95

Finding the Fourth Proportional to 669,067.39, 923,326.75 and 378,678.95

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Solution

The fourth proportional to 669,067.39, 923,326.75 and 378,678.95 is: 522,584.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,067.39 : 923,326.75 = 378,678.95 : x
  2. Step 2: Convert to fraction form
    669,067.39/923,326.75 = 378,678.95/x
  3. Step 3: Cross multiply
    669,067.39x = 923,326.75 × 378,678.95
  4. Step 4: Simplify right side
    669,067.39x = 349,644,401,386.03
  5. Step 5: Solve for x
    x = 349,644,401,386.03/669,067.39
  6. Step 6: Final answer
    x = 522,584.73

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1.5x scale

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.