Home / 378,902,401.20-568,353,601.80-256,458,394.80

Finding the Fourth Proportional to 378,902,401.20, 568,353,601.80 and 256,458,394.80

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Solution

The fourth proportional to 378,902,401.20, 568,353,601.80 and 256,458,394.80 is: 384,687,592.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,902,401.20 : 568,353,601.80 = 256,458,394.80 : x
  2. Step 2: Convert to fraction form
    378,902,401.20/568,353,601.80 = 256,458,394.80/x
  3. Step 3: Cross multiply
    378,902,401.20x = 568,353,601.80 × 256,458,394.80
  4. Step 4: Simplify right side
    378,902,401.20x = 145,759,052,396,426,400
  5. Step 5: Solve for x
    x = 145,759,052,396,426,400/378,902,401.20
  6. Step 6: Final answer
    x = 384,687,592.20

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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.