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Finding the Fourth Proportional to 874,362, 1,311,589.80 and 275,369.80

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Solution

The fourth proportional to 874,362, 1,311,589.80 and 275,369.80 is: 413,069.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,362 : 1,311,589.80 = 275,369.80 : x
  2. Step 2: Convert to fraction form
    874,362/1,311,589.80 = 275,369.80/x
  3. Step 3: Cross multiply
    874,362x = 1,311,589.80 × 275,369.80
  4. Step 4: Simplify right side
    874,362x = 361,172,220,908.04
  5. Step 5: Solve for x
    x = 361,172,220,908.04/874,362
  6. Step 6: Final answer
    x = 413,069.44

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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.