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Finding the Fourth Proportional to 874,270.65, 1,311,291.16 and 275,234.95

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Solution

The fourth proportional to 874,270.65, 1,311,291.16 and 275,234.95 is: 412,816.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,270.65 : 1,311,291.16 = 275,234.95 : x
  2. Step 2: Convert to fraction form
    874,270.65/1,311,291.16 = 275,234.95/x
  3. Step 3: Cross multiply
    874,270.65x = 1,311,291.16 × 275,234.95
  4. Step 4: Simplify right side
    874,270.65x = 360,913,156,858.04
  5. Step 5: Solve for x
    x = 360,913,156,858.04/874,270.65
  6. Step 6: Final answer
    x = 412,816.28

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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.