Home / 419,905,499.40-629,858,249.10-379,090,830.60

Finding the Fourth Proportional to 419,905,499.40, 629,858,249.10 and 379,090,830.60

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Solution

The fourth proportional to 419,905,499.40, 629,858,249.10 and 379,090,830.60 is: 568,636,245.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,905,499.40 : 629,858,249.10 = 379,090,830.60 : x
  2. Step 2: Convert to fraction form
    419,905,499.40/629,858,249.10 = 379,090,830.60/x
  3. Step 3: Cross multiply
    419,905,499.40x = 629,858,249.10 × 379,090,830.60
  4. Step 4: Simplify right side
    419,905,499.40x = 238,773,486,811,580,736
  5. Step 5: Solve for x
    x = 238,773,486,811,580,736/419,905,499.40
  6. Step 6: Final answer
    x = 568,636,245.90

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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.