Home / 388,121,400,990.73-535,515,706,471.62-225,444,399,381.38

Finding the Fourth Proportional to 388,121,400,990.73, 535,515,706,471.62 and 225,444,399,381.38

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Solution

The fourth proportional to 388,121,400,990.73, 535,515,706,471.62 and 225,444,399,381.38 is: 311,059,932,527.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,121,400,990.73 : 535,515,706,471.62 = 225,444,399,381.38 : x
  2. Step 2: Convert to fraction form
    388,121,400,990.73/535,515,706,471.62 = 225,444,399,381.38/x
  3. Step 3: Cross multiply
    388,121,400,990.73x = 535,515,706,471.62 × 225,444,399,381.38
  4. Step 4: Simplify right side
    388,121,400,990.73x = 120,729,016,804,789,761,081,344
  5. Step 5: Solve for x
    x = 120,729,016,804,789,761,081,344/388,121,400,990.73
  6. Step 6: Final answer
    x = 311,059,932,527.85

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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.