Home / 855,163.72-1,283,188.20-620,443.72

Finding the Fourth Proportional to 855,163.72, 1,283,188.20 and 620,443.72

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Solution

The fourth proportional to 855,163.72, 1,283,188.20 and 620,443.72 is: 930,986.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,163.72 : 1,283,188.20 = 620,443.72 : x
  2. Step 2: Convert to fraction form
    855,163.72/1,283,188.20 = 620,443.72/x
  3. Step 3: Cross multiply
    855,163.72x = 1,283,188.20 × 620,443.72
  4. Step 4: Simplify right side
    855,163.72x = 796,146,060,268.10
  5. Step 5: Solve for x
    x = 796,146,060,268.10/855,163.72
  6. Step 6: Final answer
    x = 930,986.71

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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.