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Finding the Fourth Proportional to 419,907,614.40, 629,861,421.60 and 400,775,738.40

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Solution

The fourth proportional to 419,907,614.40, 629,861,421.60 and 400,775,738.40 is: 601,163,607.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,907,614.40 : 629,861,421.60 = 400,775,738.40 : x
  2. Step 2: Convert to fraction form
    419,907,614.40/629,861,421.60 = 400,775,738.40/x
  3. Step 3: Cross multiply
    419,907,614.40x = 629,861,421.60 × 400,775,738.40
  4. Step 4: Simplify right side
    419,907,614.40x = 252,433,176,331,413,696
  5. Step 5: Solve for x
    x = 252,433,176,331,413,696/419,907,614.40
  6. Step 6: Final answer
    x = 601,163,607.60

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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.