Home / 451,998,218.96-678,030,211.66-189,419,199.56

Finding the Fourth Proportional to 451,998,218.96, 678,030,211.66 and 189,419,199.56

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Solution

The fourth proportional to 451,998,218.96, 678,030,211.66 and 189,419,199.56 is: 284,142,579.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,998,218.96 : 678,030,211.66 = 189,419,199.56 : x
  2. Step 2: Convert to fraction form
    451,998,218.96/678,030,211.66 = 189,419,199.56/x
  3. Step 3: Cross multiply
    451,998,218.96x = 678,030,211.66 × 189,419,199.56
  4. Step 4: Simplify right side
    451,998,218.96x = 128,431,939,970,134,576
  5. Step 5: Solve for x
    x = 128,431,939,970,134,576/451,998,218.96
  6. Step 6: Final answer
    x = 284,142,579.73

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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.