Home / 1,278,745.52-1,918,117.74-380,183.36

Finding the Fourth Proportional to 1,278,745.52, 1,918,117.74 and 380,183.36

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Solution

The fourth proportional to 1,278,745.52, 1,918,117.74 and 380,183.36 is: 570,274.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,745.52 : 1,918,117.74 = 380,183.36 : x
  2. Step 2: Convert to fraction form
    1,278,745.52/1,918,117.74 = 380,183.36/x
  3. Step 3: Cross multiply
    1,278,745.52x = 1,918,117.74 × 380,183.36
  4. Step 4: Simplify right side
    1,278,745.52x = 729,236,447,268.81
  5. Step 5: Solve for x
    x = 729,236,447,268.81/1,278,745.52
  6. Step 6: Final answer
    x = 570,274.88

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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.