Home / 1,014.09-1,399.41-621.06

Finding the Fourth Proportional to 1,014.09, 1,399.41 and 621.06

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Solution

The fourth proportional to 1,014.09, 1,399.41 and 621.06 is: 857.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,014.09 : 1,399.41 = 621.06 : x
  2. Step 2: Convert to fraction form
    1,014.09/1,399.41 = 621.06/x
  3. Step 3: Cross multiply
    1,014.09x = 1,399.41 × 621.06
  4. Step 4: Simplify right side
    1,014.09x = 869,117.57
  5. Step 5: Solve for x
    x = 869,117.57/1,014.09
  6. Step 6: Final answer
    x = 857.04

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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.