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Finding the Fourth Proportional to 419,907,618.40, 629,861,427.60 and 370,589,893.60

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Solution

The fourth proportional to 419,907,618.40, 629,861,427.60 and 370,589,893.60 is: 555,884,840.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,907,618.40 : 629,861,427.60 = 370,589,893.60 : x
  2. Step 2: Convert to fraction form
    419,907,618.40/629,861,427.60 = 370,589,893.60/x
  3. Step 3: Cross multiply
    419,907,618.40x = 629,861,427.60 × 370,589,893.60
  4. Step 4: Simplify right side
    419,907,618.40x = 233,420,279,437,028,128
  5. Step 5: Solve for x
    x = 233,420,279,437,028,128/419,907,618.40
  6. Step 6: Final answer
    x = 555,884,840.40

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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.