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Finding the Fourth Proportional to 548,940.80, 823,411.20 and 371,532.80

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Solution

The fourth proportional to 548,940.80, 823,411.20 and 371,532.80 is: 557,299.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,940.80 : 823,411.20 = 371,532.80 : x
  2. Step 2: Convert to fraction form
    548,940.80/823,411.20 = 371,532.80/x
  3. Step 3: Cross multiply
    548,940.80x = 823,411.20 × 371,532.80
  4. Step 4: Simplify right side
    548,940.80x = 305,924,268,687.36
  5. Step 5: Solve for x
    x = 305,924,268,687.36/548,940.80
  6. Step 6: Final answer
    x = 557,299.20

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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.