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Finding the Fourth Proportional to 419,907,357.40, 629,861,036.10 and 370,589,632.60

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Solution

The fourth proportional to 419,907,357.40, 629,861,036.10 and 370,589,632.60 is: 555,884,448.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,907,357.40 : 629,861,036.10 = 370,589,632.60 : x
  2. Step 2: Convert to fraction form
    419,907,357.40/629,861,036.10 = 370,589,632.60/x
  3. Step 3: Cross multiply
    419,907,357.40x = 629,861,036.10 × 370,589,632.60
  4. Step 4: Simplify right side
    419,907,357.40x = 233,419,969,957,354,368
  5. Step 5: Solve for x
    x = 233,419,969,957,354,368/419,907,357.40
  6. Step 6: Final answer
    x = 555,884,448.90

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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.