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Finding the Fourth Proportional to 519,976.44, 779,447.94 and 361,872.72

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Solution

The fourth proportional to 519,976.44, 779,447.94 and 361,872.72 is: 542,449.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,976.44 : 779,447.94 = 361,872.72 : x
  2. Step 2: Convert to fraction form
    519,976.44/779,447.94 = 361,872.72/x
  3. Step 3: Cross multiply
    519,976.44x = 779,447.94 × 361,872.72
  4. Step 4: Simplify right side
    519,976.44x = 282,060,946,146.20
  5. Step 5: Solve for x
    x = 282,060,946,146.20/519,976.44
  6. Step 6: Final answer
    x = 542,449.47

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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.