Home / 1,189,887.54-1,785,540.48-431,788.15

Finding the Fourth Proportional to 1,189,887.54, 1,785,540.48 and 431,788.15

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Solution

The fourth proportional to 1,189,887.54, 1,785,540.48 and 431,788.15 is: 647,939.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,887.54 : 1,785,540.48 = 431,788.15 : x
  2. Step 2: Convert to fraction form
    1,189,887.54/1,785,540.48 = 431,788.15/x
  3. Step 3: Cross multiply
    1,189,887.54x = 1,785,540.48 × 431,788.15
  4. Step 4: Simplify right side
    1,189,887.54x = 770,975,220,609.31
  5. Step 5: Solve for x
    x = 770,975,220,609.31/1,189,887.54
  6. Step 6: Final answer
    x = 647,939.57

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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.