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Finding the Fourth Proportional to 484,524.80, 726,787.20 and 307,815.20

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Solution

The fourth proportional to 484,524.80, 726,787.20 and 307,815.20 is: 461,722.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,524.80 : 726,787.20 = 307,815.20 : x
  2. Step 2: Convert to fraction form
    484,524.80/726,787.20 = 307,815.20/x
  3. Step 3: Cross multiply
    484,524.80x = 726,787.20 × 307,815.20
  4. Step 4: Simplify right side
    484,524.80x = 223,716,147,325.44
  5. Step 5: Solve for x
    x = 223,716,147,325.44/484,524.80
  6. Step 6: Final answer
    x = 461,722.80

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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.