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Finding the Fourth Proportional to 613,969,662.80, 919,760,100.60 and 370,910,565.20

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Solution

The fourth proportional to 613,969,662.80, 919,760,100.60 and 370,910,565.20 is: 555,644,292.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,969,662.80 : 919,760,100.60 = 370,910,565.20 : x
  2. Step 2: Convert to fraction form
    613,969,662.80/919,760,100.60 = 370,910,565.20/x
  3. Step 3: Cross multiply
    613,969,662.80x = 919,760,100.60 × 370,910,565.20
  4. Step 4: Simplify right side
    613,969,662.80x = 341,148,738,761,954,880
  5. Step 5: Solve for x
    x = 341,148,738,761,954,880/613,969,662.80
  6. Step 6: Final answer
    x = 555,644,292.27

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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.