Home / 419,904,437.40-629,856,656.10-379,089,768.60

Finding the Fourth Proportional to 419,904,437.40, 629,856,656.10 and 379,089,768.60

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Solution

The fourth proportional to 419,904,437.40, 629,856,656.10 and 379,089,768.60 is: 568,634,652.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,904,437.40 : 629,856,656.10 = 379,089,768.60 : x
  2. Step 2: Convert to fraction form
    419,904,437.40/629,856,656.10 = 379,089,768.60/x
  3. Step 3: Cross multiply
    419,904,437.40x = 629,856,656.10 × 379,089,768.60
  4. Step 4: Simplify right side
    419,904,437.40x = 238,772,214,012,118,816
  5. Step 5: Solve for x
    x = 238,772,214,012,118,816/419,904,437.40
  6. Step 6: Final answer
    x = 568,634,652.90

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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.