Home / 419,245.06-578,917.85-405,687.87

Finding the Fourth Proportional to 419,245.06, 578,917.85 and 405,687.87

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Solution

The fourth proportional to 419,245.06, 578,917.85 and 405,687.87 is: 560,197.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,245.06 : 578,917.85 = 405,687.87 : x
  2. Step 2: Convert to fraction form
    419,245.06/578,917.85 = 405,687.87/x
  3. Step 3: Cross multiply
    419,245.06x = 578,917.85 × 405,687.87
  4. Step 4: Simplify right side
    419,245.06x = 234,859,949,471.48
  5. Step 5: Solve for x
    x = 234,859,949,471.48/419,245.06
  6. Step 6: Final answer
    x = 560,197.30

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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.