Home / 449,299.60-618,979.72-313,086.36

Finding the Fourth Proportional to 449,299.60, 618,979.72 and 313,086.36

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Solution

The fourth proportional to 449,299.60, 618,979.72 and 313,086.36 is: 431,324.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,299.60 : 618,979.72 = 313,086.36 : x
  2. Step 2: Convert to fraction form
    449,299.60/618,979.72 = 313,086.36/x
  3. Step 3: Cross multiply
    449,299.60x = 618,979.72 × 313,086.36
  4. Step 4: Simplify right side
    449,299.60x = 193,794,107,448.62
  5. Step 5: Solve for x
    x = 193,794,107,448.62/449,299.60
  6. Step 6: Final answer
    x = 431,324.91

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1.5x scale

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.