Home / 789,978.54-1,185,090.66-257,375.46

Finding the Fourth Proportional to 789,978.54, 1,185,090.66 and 257,375.46

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Solution

The fourth proportional to 789,978.54, 1,185,090.66 and 257,375.46 is: 386,103.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,978.54 : 1,185,090.66 = 257,375.46 : x
  2. Step 2: Convert to fraction form
    789,978.54/1,185,090.66 = 257,375.46/x
  3. Step 3: Cross multiply
    789,978.54x = 1,185,090.66 × 257,375.46
  4. Step 4: Simplify right side
    789,978.54x = 305,013,253,759.20
  5. Step 5: Solve for x
    x = 305,013,253,759.20/789,978.54
  6. Step 6: Final answer
    x = 386,103.21

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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.