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Finding the Fourth Proportional to 421,956.72, 582,571.96 and 376,556.76

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Solution

The fourth proportional to 421,956.72, 582,571.96 and 376,556.76 is: 519,890.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,956.72 : 582,571.96 = 376,556.76 : x
  2. Step 2: Convert to fraction form
    421,956.72/582,571.96 = 376,556.76/x
  3. Step 3: Cross multiply
    421,956.72x = 582,571.96 × 376,556.76
  4. Step 4: Simplify right side
    421,956.72x = 219,371,409,724.45
  5. Step 5: Solve for x
    x = 219,371,409,724.45/421,956.72
  6. Step 6: Final answer
    x = 519,890.78

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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.