Home / 1,279,538,208.87-1,919,087,840.52-405,944,859.39

Finding the Fourth Proportional to 1,279,538,208.87, 1,919,087,840.52 and 405,944,859.39

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Solution

The fourth proportional to 1,279,538,208.87, 1,919,087,840.52 and 405,944,859.39 is: 608,847,659.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,538,208.87 : 1,919,087,840.52 = 405,944,859.39 : x
  2. Step 2: Convert to fraction form
    1,279,538,208.87/1,919,087,840.52 = 405,944,859.39/x
  3. Step 3: Cross multiply
    1,279,538,208.87x = 1,919,087,840.52 × 405,944,859.39
  4. Step 4: Simplify right side
    1,279,538,208.87x = 779,043,843,576,950,144
  5. Step 5: Solve for x
    x = 779,043,843,576,950,144/1,279,538,208.87
  6. Step 6: Final answer
    x = 608,847,659.39

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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.