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Finding the Fourth Proportional to 500,717.92, 751,078.32 and 126,740.56

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Solution

The fourth proportional to 500,717.92, 751,078.32 and 126,740.56 is: 190,111.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,717.92 : 751,078.32 = 126,740.56 : x
  2. Step 2: Convert to fraction form
    500,717.92/751,078.32 = 126,740.56/x
  3. Step 3: Cross multiply
    500,717.92x = 751,078.32 × 126,740.56
  4. Step 4: Simplify right side
    500,717.92x = 95,192,086,880.66
  5. Step 5: Solve for x
    x = 95,192,086,880.66/500,717.92
  6. Step 6: Final answer
    x = 190,111.20

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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.