Home / 451,973,621.38-678,168,935.79-206,405,535.82

Finding the Fourth Proportional to 451,973,621.38, 678,168,935.79 and 206,405,535.82

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Solution

The fourth proportional to 451,973,621.38, 678,168,935.79 and 206,405,535.82 is: 309,703,522.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,973,621.38 : 678,168,935.79 = 206,405,535.82 : x
  2. Step 2: Convert to fraction form
    451,973,621.38/678,168,935.79 = 206,405,535.82/x
  3. Step 3: Cross multiply
    451,973,621.38x = 678,168,935.79 × 206,405,535.82
  4. Step 4: Simplify right side
    451,973,621.38x = 139,977,822,568,214,112
  5. Step 5: Solve for x
    x = 139,977,822,568,214,112/451,973,621.38
  6. Step 6: Final answer
    x = 309,703,522.39

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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.