Home / 628,172.91-867,032.57-356,399.88

Finding the Fourth Proportional to 628,172.91, 867,032.57 and 356,399.88

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Solution

The fourth proportional to 628,172.91, 867,032.57 and 356,399.88 is: 491,919.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,172.91 : 867,032.57 = 356,399.88 : x
  2. Step 2: Convert to fraction form
    628,172.91/867,032.57 = 356,399.88/x
  3. Step 3: Cross multiply
    628,172.91x = 867,032.57 × 356,399.88
  4. Step 4: Simplify right side
    628,172.91x = 309,010,302,122.09
  5. Step 5: Solve for x
    x = 309,010,302,122.09/628,172.91
  6. Step 6: Final answer
    x = 491,919.18

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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.