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Finding the Fourth Proportional to 479,956.44, 718,125.54 and 287,116.44

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Solution

The fourth proportional to 479,956.44, 718,125.54 and 287,116.44 is: 429,592.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,956.44 : 718,125.54 = 287,116.44 : x
  2. Step 2: Convert to fraction form
    479,956.44/718,125.54 = 287,116.44/x
  3. Step 3: Cross multiply
    479,956.44x = 718,125.54 × 287,116.44
  4. Step 4: Simplify right side
    479,956.44x = 206,185,648,517.88
  5. Step 5: Solve for x
    x = 206,185,648,517.88/479,956.44
  6. Step 6: Final answer
    x = 429,592.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.