Home / 394,192,634.61-543,989,360.45-217,992,485.33

Finding the Fourth Proportional to 394,192,634.61, 543,989,360.45 and 217,992,485.33

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Solution

The fourth proportional to 394,192,634.61, 543,989,360.45 and 217,992,485.33 is: 300,831,578.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,192,634.61 : 543,989,360.45 = 217,992,485.33 : x
  2. Step 2: Convert to fraction form
    394,192,634.61/543,989,360.45 = 217,992,485.33/x
  3. Step 3: Cross multiply
    394,192,634.61x = 543,989,360.45 × 217,992,485.33
  4. Step 4: Simplify right side
    394,192,634.61x = 118,585,592,675,397,728
  5. Step 5: Solve for x
    x = 118,585,592,675,397,728/394,192,634.61
  6. Step 6: Final answer
    x = 300,831,578.94

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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.