Home / 3,131,468.49-4,321,532.89-2,987,979.42

Finding the Fourth Proportional to 3,131,468.49, 4,321,532.89 and 2,987,979.42

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Solution

The fourth proportional to 3,131,468.49, 4,321,532.89 and 2,987,979.42 is: 4,123,513.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131,468.49 : 4,321,532.89 = 2,987,979.42 : x
  2. Step 2: Convert to fraction form
    3,131,468.49/4,321,532.89 = 2,987,979.42/x
  3. Step 3: Cross multiply
    3,131,468.49x = 4,321,532.89 × 2,987,979.42
  4. Step 4: Simplify right side
    3,131,468.49x = 12,912,651,345,643.07
  5. Step 5: Solve for x
    x = 12,912,651,345,643.07/3,131,468.49
  6. Step 6: Final answer
    x = 4,123,513.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.