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Finding the Fourth Proportional to 500,679.68, 751,021.08 and 126,702.56

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Solution

The fourth proportional to 500,679.68, 751,021.08 and 126,702.56 is: 190,054.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,679.68 : 751,021.08 = 126,702.56 : x
  2. Step 2: Convert to fraction form
    500,679.68/751,021.08 = 126,702.56/x
  3. Step 3: Cross multiply
    500,679.68x = 751,021.08 × 126,702.56
  4. Step 4: Simplify right side
    500,679.68x = 95,156,293,449.96
  5. Step 5: Solve for x
    x = 95,156,293,449.96/500,679.68
  6. Step 6: Final answer
    x = 190,054.23

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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.