Home / 628,710.97-867,621.24-342,231.04

Finding the Fourth Proportional to 628,710.97, 867,621.24 and 342,231.04

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Solution

The fourth proportional to 628,710.97, 867,621.24 and 342,231.04 is: 472,278.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,710.97 : 867,621.24 = 342,231.04 : x
  2. Step 2: Convert to fraction form
    628,710.97/867,621.24 = 342,231.04/x
  3. Step 3: Cross multiply
    628,710.97x = 867,621.24 × 342,231.04
  4. Step 4: Simplify right side
    628,710.97x = 296,926,919,291.29
  5. Step 5: Solve for x
    x = 296,926,919,291.29/628,710.97
  6. Step 6: Final answer
    x = 472,278.89

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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.