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Finding the Fourth Proportional to 1,289,204,889.63, 1,933,804,920.18 and 403,958,018.31

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Solution

The fourth proportional to 1,289,204,889.63, 1,933,804,920.18 and 403,958,018.31 is: 605,936,270.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,204,889.63 : 1,933,804,920.18 = 403,958,018.31 : x
  2. Step 2: Convert to fraction form
    1,289,204,889.63/1,933,804,920.18 = 403,958,018.31/x
  3. Step 3: Cross multiply
    1,289,204,889.63x = 1,933,804,920.18 × 403,958,018.31
  4. Step 4: Simplify right side
    1,289,204,889.63x = 781,176,003,354,040,576
  5. Step 5: Solve for x
    x = 781,176,003,354,040,576/1,289,204,889.63
  6. Step 6: Final answer
    x = 605,936,270.98

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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.