Home / 385,728,530,787.80-532,335,149,099.79-231,409,989,923.82

Finding the Fourth Proportional to 385,728,530,787.80, 532,335,149,099.79 and 231,409,989,923.82

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Solution

The fourth proportional to 385,728,530,787.80, 532,335,149,099.79 and 231,409,989,923.82 is: 319,363,649,968.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,728,530,787.80 : 532,335,149,099.79 = 231,409,989,923.82 : x
  2. Step 2: Convert to fraction form
    385,728,530,787.80/532,335,149,099.79 = 231,409,989,923.82/x
  3. Step 3: Cross multiply
    385,728,530,787.80x = 532,335,149,099.79 × 231,409,989,923.82
  4. Step 4: Simplify right side
    385,728,530,787.80x = 123,187,671,489,277,620,912,128
  5. Step 5: Solve for x
    x = 123,187,671,489,277,620,912,128/385,728,530,787.80
  6. Step 6: Final answer
    x = 319,363,649,968.24

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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.