Home / 638,202.45-880,719.39-351,722.54

Finding the Fourth Proportional to 638,202.45, 880,719.39 and 351,722.54

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Solution

The fourth proportional to 638,202.45, 880,719.39 and 351,722.54 is: 485,377.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,202.45 : 880,719.39 = 351,722.54 : x
  2. Step 2: Convert to fraction form
    638,202.45/880,719.39 = 351,722.54/x
  3. Step 3: Cross multiply
    638,202.45x = 880,719.39 × 351,722.54
  4. Step 4: Simplify right side
    638,202.45x = 309,768,859,119.44
  5. Step 5: Solve for x
    x = 309,768,859,119.44/638,202.45
  6. Step 6: Final answer
    x = 485,377.11

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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.