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Finding the Fourth Proportional to 544,133.20, 816,199.80 and 489,020.80

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Solution

The fourth proportional to 544,133.20, 816,199.80 and 489,020.80 is: 733,531.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    544,133.20 : 816,199.80 = 489,020.80 : x
  2. Step 2: Convert to fraction form
    544,133.20/816,199.80 = 489,020.80/x
  3. Step 3: Cross multiply
    544,133.20x = 816,199.80 × 489,020.80
  4. Step 4: Simplify right side
    544,133.20x = 399,138,679,155.84
  5. Step 5: Solve for x
    x = 399,138,679,155.84/544,133.20
  6. Step 6: Final answer
    x = 733,531.20

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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.