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Finding the Fourth Proportional to 455,992.22, 629,322.56 and 379,376.15

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Solution

The fourth proportional to 455,992.22, 629,322.56 and 379,376.15 is: 523,583.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,992.22 : 629,322.56 = 379,376.15 : x
  2. Step 2: Convert to fraction form
    455,992.22/629,322.56 = 379,376.15/x
  3. Step 3: Cross multiply
    455,992.22x = 629,322.56 × 379,376.15
  4. Step 4: Simplify right side
    455,992.22x = 238,749,964,877.45
  5. Step 5: Solve for x
    x = 238,749,964,877.45/455,992.22
  6. Step 6: Final answer
    x = 523,583.42

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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.