Home / 419,913.72-579,486.96-228,936.78

Finding the Fourth Proportional to 419,913.72, 579,486.96 and 228,936.78

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Solution

The fourth proportional to 419,913.72, 579,486.96 and 228,936.78 is: 315,936.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,913.72 : 579,486.96 = 228,936.78 : x
  2. Step 2: Convert to fraction form
    419,913.72/579,486.96 = 228,936.78/x
  3. Step 3: Cross multiply
    419,913.72x = 579,486.96 × 228,936.78
  4. Step 4: Simplify right side
    419,913.72x = 132,665,878,674.39
  5. Step 5: Solve for x
    x = 132,665,878,674.39/419,913.72
  6. Step 6: Final answer
    x = 315,936.04

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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.