Home / 505,492,028.70-758,238,043.05-419,327,727.90

Finding the Fourth Proportional to 505,492,028.70, 758,238,043.05 and 419,327,727.90

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Solution

The fourth proportional to 505,492,028.70, 758,238,043.05 and 419,327,727.90 is: 628,991,591.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,492,028.70 : 758,238,043.05 = 419,327,727.90 : x
  2. Step 2: Convert to fraction form
    505,492,028.70/758,238,043.05 = 419,327,727.90/x
  3. Step 3: Cross multiply
    505,492,028.70x = 758,238,043.05 × 419,327,727.90
  4. Step 4: Simplify right side
    505,492,028.70x = 317,950,235,799,498,880
  5. Step 5: Solve for x
    x = 317,950,235,799,498,880/505,492,028.70
  6. Step 6: Final answer
    x = 628,991,591.85

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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.