Home / 789,821.88-1,089,511.32-484,046.47

Finding the Fourth Proportional to 789,821.88, 1,089,511.32 and 484,046.47

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Solution

The fourth proportional to 789,821.88, 1,089,511.32 and 484,046.47 is: 667,712.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,821.88 : 1,089,511.32 = 484,046.47 : x
  2. Step 2: Convert to fraction form
    789,821.88/1,089,511.32 = 484,046.47/x
  3. Step 3: Cross multiply
    789,821.88x = 1,089,511.32 × 484,046.47
  4. Step 4: Simplify right side
    789,821.88x = 527,374,108,471.04
  5. Step 5: Solve for x
    x = 527,374,108,471.04/789,821.88
  6. Step 6: Final answer
    x = 667,712.71

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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.