Home / 776,840,748.42-1,072,040,662.94-419,608,523.43

Finding the Fourth Proportional to 776,840,748.42, 1,072,040,662.94 and 419,608,523.43

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Solution

The fourth proportional to 776,840,748.42, 1,072,040,662.94 and 419,608,523.43 is: 579,059,994.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    776,840,748.42 : 1,072,040,662.94 = 419,608,523.43 : x
  2. Step 2: Convert to fraction form
    776,840,748.42/1,072,040,662.94 = 419,608,523.43/x
  3. Step 3: Cross multiply
    776,840,748.42x = 1,072,040,662.94 × 419,608,523.43
  4. Step 4: Simplify right side
    776,840,748.42x = 449,837,399,633,171,776
  5. Step 5: Solve for x
    x = 449,837,399,633,171,776/776,840,748.42
  6. Step 6: Final answer
    x = 579,059,994.66

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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.