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Finding the Fourth Proportional to 489,117.20, 733,675.80 and 276,540.80

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Solution

The fourth proportional to 489,117.20, 733,675.80 and 276,540.80 is: 414,811.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,117.20 : 733,675.80 = 276,540.80 : x
  2. Step 2: Convert to fraction form
    489,117.20/733,675.80 = 276,540.80/x
  3. Step 3: Cross multiply
    489,117.20x = 733,675.80 × 276,540.80
  4. Step 4: Simplify right side
    489,117.20x = 202,891,292,672.64
  5. Step 5: Solve for x
    x = 202,891,292,672.64/489,117.20
  6. Step 6: Final answer
    x = 414,811.20

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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.