Home / 1,388,309.97-2,082,662.46-428,847.10

Finding the Fourth Proportional to 1,388,309.97, 2,082,662.46 and 428,847.10

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Solution

The fourth proportional to 1,388,309.97, 2,082,662.46 and 428,847.10 is: 643,331.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,309.97 : 2,082,662.46 = 428,847.10 : x
  2. Step 2: Convert to fraction form
    1,388,309.97/2,082,662.46 = 428,847.10/x
  3. Step 3: Cross multiply
    1,388,309.97x = 2,082,662.46 × 428,847.10
  4. Step 4: Simplify right side
    1,388,309.97x = 893,143,756,249.87
  5. Step 5: Solve for x
    x = 893,143,756,249.87/1,388,309.97
  6. Step 6: Final answer
    x = 643,331.66

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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.