Home / 638,388.29-880,966.31-351,902.22

Finding the Fourth Proportional to 638,388.29, 880,966.31 and 351,902.22

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Solution

The fourth proportional to 638,388.29, 880,966.31 and 351,902.22 is: 485,619.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,388.29 : 880,966.31 = 351,902.22 : x
  2. Step 2: Convert to fraction form
    638,388.29/880,966.31 = 351,902.22/x
  3. Step 3: Cross multiply
    638,388.29x = 880,966.31 × 351,902.22
  4. Step 4: Simplify right side
    638,388.29x = 310,013,998,474.70
  5. Step 5: Solve for x
    x = 310,013,998,474.70/638,388.29
  6. Step 6: Final answer
    x = 485,619.81

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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.