Home / 394,192,630.49-543,989,354.76-217,992,481.20

Finding the Fourth Proportional to 394,192,630.49, 543,989,354.76 and 217,992,481.20

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Solution

The fourth proportional to 394,192,630.49, 543,989,354.76 and 217,992,481.20 is: 300,831,573.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,192,630.49 : 543,989,354.76 = 217,992,481.20 : x
  2. Step 2: Convert to fraction form
    394,192,630.49/543,989,354.76 = 217,992,481.20/x
  3. Step 3: Cross multiply
    394,192,630.49x = 543,989,354.76 × 217,992,481.20
  4. Step 4: Simplify right side
    394,192,630.49x = 118,585,589,190,519,424
  5. Step 5: Solve for x
    x = 118,585,589,190,519,424/394,192,630.49
  6. Step 6: Final answer
    x = 300,831,573.25

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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.