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Finding the Fourth Proportional to 489,089.60, 733,634.40 and 279,137.60

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Solution

The fourth proportional to 489,089.60, 733,634.40 and 279,137.60 is: 418,706.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,089.60 : 733,634.40 = 279,137.60 : x
  2. Step 2: Convert to fraction form
    489,089.60/733,634.40 = 279,137.60/x
  3. Step 3: Cross multiply
    489,089.60x = 733,634.40 × 279,137.60
  4. Step 4: Simplify right side
    489,089.60x = 204,784,945,693.44
  5. Step 5: Solve for x
    x = 204,784,945,693.44/489,089.60
  6. Step 6: Final answer
    x = 418,706.40

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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.