Home / 419,440.38-578,828.64-228,453.18

Finding the Fourth Proportional to 419,440.38, 578,828.64 and 228,453.18

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Solution

The fourth proportional to 419,440.38, 578,828.64 and 228,453.18 is: 315,265.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,440.38 : 578,828.64 = 228,453.18 : x
  2. Step 2: Convert to fraction form
    419,440.38/578,828.64 = 228,453.18/x
  3. Step 3: Cross multiply
    419,440.38x = 578,828.64 × 228,453.18
  4. Step 4: Simplify right side
    419,440.38x = 132,235,243,483.08
  5. Step 5: Solve for x
    x = 132,235,243,483.08/419,440.38
  6. Step 6: Final answer
    x = 315,265.89

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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.