Home / 1,040.27-1,435.14-620.53

Finding the Fourth Proportional to 1,040.27, 1,435.14 and 620.53

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Solution

The fourth proportional to 1,040.27, 1,435.14 and 620.53 is: 856.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040.27 : 1,435.14 = 620.53 : x
  2. Step 2: Convert to fraction form
    1,040.27/1,435.14 = 620.53/x
  3. Step 3: Cross multiply
    1,040.27x = 1,435.14 × 620.53
  4. Step 4: Simplify right side
    1,040.27x = 890,543.84
  5. Step 5: Solve for x
    x = 890,543.84/1,040.27
  6. Step 6: Final answer
    x = 856.07

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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.