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Finding the Fourth Proportional to 643,541,695.39, 965,321,512.22 and 183,479,865.31

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Solution

The fourth proportional to 643,541,695.39, 965,321,512.22 and 183,479,865.31 is: 275,222,355.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,541,695.39 : 965,321,512.22 = 183,479,865.31 : x
  2. Step 2: Convert to fraction form
    643,541,695.39/965,321,512.22 = 183,479,865.31/x
  3. Step 3: Cross multiply
    643,541,695.39x = 965,321,512.22 × 183,479,865.31
  4. Step 4: Simplify right side
    643,541,695.39x = 177,117,061,042,971,136
  5. Step 5: Solve for x
    x = 177,117,061,042,971,136/643,541,695.39
  6. Step 6: Final answer
    x = 275,222,355.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.