Home / 613,943.82-921,120.68-272,340.12

Finding the Fourth Proportional to 613,943.82, 921,120.68 and 272,340.12

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Solution

The fourth proportional to 613,943.82, 921,120.68 and 272,340.12 is: 408,601.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,943.82 : 921,120.68 = 272,340.12 : x
  2. Step 2: Convert to fraction form
    613,943.82/921,120.68 = 272,340.12/x
  3. Step 3: Cross multiply
    613,943.82x = 921,120.68 × 272,340.12
  4. Step 4: Simplify right side
    613,943.82x = 250,858,113,874.32
  5. Step 5: Solve for x
    x = 250,858,113,874.32/613,943.82
  6. Step 6: Final answer
    x = 408,601.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.