Home / 419,905,347.60-629,858,021.40-408,567,939.60

Finding the Fourth Proportional to 419,905,347.60, 629,858,021.40 and 408,567,939.60

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Solution

The fourth proportional to 419,905,347.60, 629,858,021.40 and 408,567,939.60 is: 612,851,909.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,905,347.60 : 629,858,021.40 = 408,567,939.60 : x
  2. Step 2: Convert to fraction form
    419,905,347.60/629,858,021.40 = 408,567,939.60/x
  3. Step 3: Cross multiply
    419,905,347.60x = 629,858,021.40 × 408,567,939.60
  4. Step 4: Simplify right side
    419,905,347.60x = 257,339,794,043,930,720
  5. Step 5: Solve for x
    x = 257,339,794,043,930,720/419,905,347.60
  6. Step 6: Final answer
    x = 612,851,909.40

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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.