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Finding the Fourth Proportional to 505,599.91, 758,401.95 and 126,519.61

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Solution

The fourth proportional to 505,599.91, 758,401.95 and 126,519.61 is: 189,779.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,599.91 : 758,401.95 = 126,519.61 : x
  2. Step 2: Convert to fraction form
    505,599.91/758,401.95 = 126,519.61/x
  3. Step 3: Cross multiply
    505,599.91x = 758,401.95 × 126,519.61
  4. Step 4: Simplify right side
    505,599.91x = 95,952,718,937.24
  5. Step 5: Solve for x
    x = 95,952,718,937.24/505,599.91
  6. Step 6: Final answer
    x = 189,779.94

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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.