Home / 1,225,138.53-1,690,544.21-681,137.73

Finding the Fourth Proportional to 1,225,138.53, 1,690,544.21 and 681,137.73

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Solution

The fourth proportional to 1,225,138.53, 1,690,544.21 and 681,137.73 is: 939,888.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,138.53 : 1,690,544.21 = 681,137.73 : x
  2. Step 2: Convert to fraction form
    1,225,138.53/1,690,544.21 = 681,137.73/x
  3. Step 3: Cross multiply
    1,225,138.53x = 1,690,544.21 × 681,137.73
  4. Step 4: Simplify right side
    1,225,138.53x = 1,151,493,442,258.35
  5. Step 5: Solve for x
    x = 1,151,493,442,258.35/1,225,138.53
  6. Step 6: Final answer
    x = 939,888.36

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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.