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Finding the Fourth Proportional to 421,843.96, 582,416.36 and 376,443.87

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Solution

The fourth proportional to 421,843.96, 582,416.36 and 376,443.87 is: 519,735.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,843.96 : 582,416.36 = 376,443.87 : x
  2. Step 2: Convert to fraction form
    421,843.96/582,416.36 = 376,443.87/x
  3. Step 3: Cross multiply
    421,843.96x = 582,416.36 × 376,443.87
  4. Step 4: Simplify right side
    421,843.96x = 219,247,068,509.71
  5. Step 5: Solve for x
    x = 219,247,068,509.71/421,843.96
  6. Step 6: Final answer
    x = 519,735.00

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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.