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Finding the Fourth Proportional to 489,614.55, 734,419.26 and 266,393.96

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Solution

The fourth proportional to 489,614.55, 734,419.26 and 266,393.96 is: 399,589.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,614.55 : 734,419.26 = 266,393.96 : x
  2. Step 2: Convert to fraction form
    489,614.55/734,419.26 = 266,393.96/x
  3. Step 3: Cross multiply
    489,614.55x = 734,419.26 × 266,393.96
  4. Step 4: Simplify right side
    489,614.55x = 195,644,851,299.57
  5. Step 5: Solve for x
    x = 195,644,851,299.57/489,614.55
  6. Step 6: Final answer
    x = 399,589.54

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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.