Home / 1,040.14-1,559.58-424.12

Finding the Fourth Proportional to 1,040.14, 1,559.58 and 424.12

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Solution

The fourth proportional to 1,040.14, 1,559.58 and 424.12 is: 635.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040.14 : 1,559.58 = 424.12 : x
  2. Step 2: Convert to fraction form
    1,040.14/1,559.58 = 424.12/x
  3. Step 3: Cross multiply
    1,040.14x = 1,559.58 × 424.12
  4. Step 4: Simplify right side
    1,040.14x = 661,449.07
  5. Step 5: Solve for x
    x = 661,449.07/1,040.14
  6. Step 6: Final answer
    x = 635.92

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Double scale
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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.