Home / 1,328,015.20-1,993,059.60-618,131.20

Finding the Fourth Proportional to 1,328,015.20, 1,993,059.60 and 618,131.20

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Solution

The fourth proportional to 1,328,015.20, 1,993,059.60 and 618,131.20 is: 927,679.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,015.20 : 1,993,059.60 = 618,131.20 : x
  2. Step 2: Convert to fraction form
    1,328,015.20/1,993,059.60 = 618,131.20/x
  3. Step 3: Cross multiply
    1,328,015.20x = 1,993,059.60 × 618,131.20
  4. Step 4: Simplify right side
    1,328,015.20x = 1,231,972,322,219.52
  5. Step 5: Solve for x
    x = 1,231,972,322,219.52/1,328,015.20
  6. Step 6: Final answer
    x = 927,679.38

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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.