Home / 419,491.85-578,895.77-228,505.23

Finding the Fourth Proportional to 419,491.85, 578,895.77 and 228,505.23

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Solution

The fourth proportional to 419,491.85, 578,895.77 and 228,505.23 is: 315,335.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,491.85 : 578,895.77 = 228,505.23 : x
  2. Step 2: Convert to fraction form
    419,491.85/578,895.77 = 228,505.23/x
  3. Step 3: Cross multiply
    419,491.85x = 578,895.77 × 228,505.23
  4. Step 4: Simplify right side
    419,491.85x = 132,280,711,641.14
  5. Step 5: Solve for x
    x = 132,280,711,641.14/419,491.85
  6. Step 6: Final answer
    x = 315,335.60

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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.