Home / 638,201.45-880,718.01-351,721.54

Finding the Fourth Proportional to 638,201.45, 880,718.01 and 351,721.54

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Solution

The fourth proportional to 638,201.45, 880,718.01 and 351,721.54 is: 485,375.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,201.45 : 880,718.01 = 351,721.54 : x
  2. Step 2: Convert to fraction form
    638,201.45/880,718.01 = 351,721.54/x
  3. Step 3: Cross multiply
    638,201.45x = 880,718.01 × 351,721.54
  4. Step 4: Simplify right side
    638,201.45x = 309,767,493,024.33
  5. Step 5: Solve for x
    x = 309,767,493,024.33/638,201.45
  6. Step 6: Final answer
    x = 485,375.73

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1.5x scale

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.