Home / 388,240,128,305.70-582,360,192,458.55-189,391,061,912.10

Finding the Fourth Proportional to 388,240,128,305.70, 582,360,192,458.55 and 189,391,061,912.10

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Solution

The fourth proportional to 388,240,128,305.70, 582,360,192,458.55 and 189,391,061,912.10 is: 284,086,592,868.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,240,128,305.70 : 582,360,192,458.55 = 189,391,061,912.10 : x
  2. Step 2: Convert to fraction form
    388,240,128,305.70/582,360,192,458.55 = 189,391,061,912.10/x
  3. Step 3: Cross multiply
    388,240,128,305.70x = 582,360,192,458.55 × 189,391,061,912.10
  4. Step 4: Simplify right side
    388,240,128,305.70x = 110,293,815,265,059,726,688,256
  5. Step 5: Solve for x
    x = 110,293,815,265,059,726,688,256/388,240,128,305.70
  6. Step 6: Final answer
    x = 284,086,592,868.15

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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.