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Finding the Fourth Proportional to 526,351.59, 789,520.05 and 126,989.01

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Solution

The fourth proportional to 526,351.59, 789,520.05 and 126,989.01 is: 190,481.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,351.59 : 789,520.05 = 126,989.01 : x
  2. Step 2: Convert to fraction form
    526,351.59/789,520.05 = 126,989.01/x
  3. Step 3: Cross multiply
    526,351.59x = 789,520.05 × 126,989.01
  4. Step 4: Simplify right side
    526,351.59x = 100,260,369,524.65
  5. Step 5: Solve for x
    x = 100,260,369,524.65/526,351.59
  6. Step 6: Final answer
    x = 190,481.75

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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.