Home / 1,619.79-2,428.11-523.41

Finding the Fourth Proportional to 1,619.79, 2,428.11 and 523.41

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Solution

The fourth proportional to 1,619.79, 2,428.11 and 523.41 is: 784.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,619.79 : 2,428.11 = 523.41 : x
  2. Step 2: Convert to fraction form
    1,619.79/2,428.11 = 523.41/x
  3. Step 3: Cross multiply
    1,619.79x = 2,428.11 × 523.41
  4. Step 4: Simplify right side
    1,619.79x = 1,270,897.06
  5. Step 5: Solve for x
    x = 1,270,897.06/1,619.79
  6. Step 6: Final answer
    x = 784.61

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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.