Home / 419,409.24-578,791.15-228,422.63

Finding the Fourth Proportional to 419,409.24, 578,791.15 and 228,422.63

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Solution

The fourth proportional to 419,409.24, 578,791.15 and 228,422.63 is: 315,226.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,409.24 : 578,791.15 = 228,422.63 : x
  2. Step 2: Convert to fraction form
    419,409.24/578,791.15 = 228,422.63/x
  3. Step 3: Cross multiply
    419,409.24x = 578,791.15 × 228,422.63
  4. Step 4: Simplify right side
    419,409.24x = 132,208,993,809.77
  5. Step 5: Solve for x
    x = 132,208,993,809.77/419,409.24
  6. Step 6: Final answer
    x = 315,226.71

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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.