Home / 1,619.63-2,429.64-523.61

Finding the Fourth Proportional to 1,619.63, 2,429.64 and 523.61

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Solution

The fourth proportional to 1,619.63, 2,429.64 and 523.61 is: 785.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,619.63 : 2,429.64 = 523.61 : x
  2. Step 2: Convert to fraction form
    1,619.63/2,429.64 = 523.61/x
  3. Step 3: Cross multiply
    1,619.63x = 2,429.64 × 523.61
  4. Step 4: Simplify right side
    1,619.63x = 1,272,183.80
  5. Step 5: Solve for x
    x = 1,272,183.80/1,619.63
  6. Step 6: Final answer
    x = 785.48

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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.