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Finding the Fourth Proportional to 505,598.91, 758,400.45 and 126,518.61

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Solution

The fourth proportional to 505,598.91, 758,400.45 and 126,518.61 is: 189,778.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,598.91 : 758,400.45 = 126,518.61 : x
  2. Step 2: Convert to fraction form
    505,598.91/758,400.45 = 126,518.61/x
  3. Step 3: Cross multiply
    505,598.91x = 758,400.45 × 126,518.61
  4. Step 4: Simplify right side
    505,598.91x = 95,951,770,124.78
  5. Step 5: Solve for x
    x = 95,951,770,124.78/505,598.91
  6. Step 6: Final answer
    x = 189,778.44

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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.