Home / 388,186,806.33-582,085,498.46-129,311,013.69

Finding the Fourth Proportional to 388,186,806.33, 582,085,498.46 and 129,311,013.69

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Solution

The fourth proportional to 388,186,806.33, 582,085,498.46 and 129,311,013.69 is: 193,901,659.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,186,806.33 : 582,085,498.46 = 129,311,013.69 : x
  2. Step 2: Convert to fraction form
    388,186,806.33/582,085,498.46 = 129,311,013.69/x
  3. Step 3: Cross multiply
    388,186,806.33x = 582,085,498.46 × 129,311,013.69
  4. Step 4: Simplify right side
    388,186,806.33x = 75,270,065,859,464,976
  5. Step 5: Solve for x
    x = 75,270,065,859,464,976/388,186,806.33
  6. Step 6: Final answer
    x = 193,901,659.28

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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.