Home / 855,161.72-1,283,185.20-620,441.72

Finding the Fourth Proportional to 855,161.72, 1,283,185.20 and 620,441.72

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Solution

The fourth proportional to 855,161.72, 1,283,185.20 and 620,441.72 is: 930,983.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,161.72 : 1,283,185.20 = 620,441.72 : x
  2. Step 2: Convert to fraction form
    855,161.72/1,283,185.20 = 620,441.72/x
  3. Step 3: Cross multiply
    855,161.72x = 1,283,185.20 × 620,441.72
  4. Step 4: Simplify right side
    855,161.72x = 796,141,632,566.54
  5. Step 5: Solve for x
    x = 796,141,632,566.54/855,161.72
  6. Step 6: Final answer
    x = 930,983.71

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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.