Home / 394,192,938.46-543,989,778.08-217,992,787.96

Finding the Fourth Proportional to 394,192,938.46, 543,989,778.08 and 217,992,787.96

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Solution

The fourth proportional to 394,192,938.46, 543,989,778.08 and 217,992,787.96 is: 300,831,995.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,192,938.46 : 543,989,778.08 = 217,992,787.96 : x
  2. Step 2: Convert to fraction form
    394,192,938.46/543,989,778.08 = 217,992,787.96/x
  3. Step 3: Cross multiply
    394,192,938.46x = 543,989,778.08 × 217,992,787.96
  4. Step 4: Simplify right side
    394,192,938.46x = 118,585,848,345,400,912
  5. Step 5: Solve for x
    x = 118,585,848,345,400,912/394,192,938.46
  6. Step 6: Final answer
    x = 300,831,995.64

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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.