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Finding the Fourth Proportional to 661,907,561.60, 913,496,954.38 and 494,352,929.50

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Solution

The fourth proportional to 661,907,561.60, 913,496,954.38 and 494,352,929.50 is: 682,255,229.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,907,561.60 : 913,496,954.38 = 494,352,929.50 : x
  2. Step 2: Convert to fraction form
    661,907,561.60/913,496,954.38 = 494,352,929.50/x
  3. Step 3: Cross multiply
    661,907,561.60x = 913,496,954.38 × 494,352,929.50
  4. Step 4: Simplify right side
    661,907,561.60x = 451,589,895,487,080,832
  5. Step 5: Solve for x
    x = 451,589,895,487,080,832/661,907,561.60
  6. Step 6: Final answer
    x = 682,255,229.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.