Home / 1,292,858,576-1,939,560,226.32-419,391,742.40

Finding the Fourth Proportional to 1,292,858,576, 1,939,560,226.32 and 419,391,742.40

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Solution

The fourth proportional to 1,292,858,576, 1,939,560,226.32 and 419,391,742.40 is: 629,175,965.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,858,576 : 1,939,560,226.32 = 419,391,742.40 : x
  2. Step 2: Convert to fraction form
    1,292,858,576/1,939,560,226.32 = 419,391,742.40/x
  3. Step 3: Cross multiply
    1,292,858,576x = 1,939,560,226.32 × 419,391,742.40
  4. Step 4: Simplify right side
    1,292,858,576x = 813,435,542,806,083,072
  5. Step 5: Solve for x
    x = 813,435,542,806,083,072/1,292,858,576
  6. Step 6: Final answer
    x = 629,175,965.50

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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.