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Finding the Fourth Proportional to 412,369.89, 569,084.46 and 393,474.21

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Solution

The fourth proportional to 412,369.89, 569,084.46 and 393,474.21 is: 543,007.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,369.89 : 569,084.46 = 393,474.21 : x
  2. Step 2: Convert to fraction form
    412,369.89/569,084.46 = 393,474.21/x
  3. Step 3: Cross multiply
    412,369.89x = 569,084.46 × 393,474.21
  4. Step 4: Simplify right side
    412,369.89x = 223,920,058,321.78
  5. Step 5: Solve for x
    x = 223,920,058,321.78/412,369.89
  6. Step 6: Final answer
    x = 543,007.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.