Home / 840,943.88-1,261,540.64-272,134.32

Finding the Fourth Proportional to 840,943.88, 1,261,540.64 and 272,134.32

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Solution

The fourth proportional to 840,943.88, 1,261,540.64 and 272,134.32 is: 408,241.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,943.88 : 1,261,540.64 = 272,134.32 : x
  2. Step 2: Convert to fraction form
    840,943.88/1,261,540.64 = 272,134.32/x
  3. Step 3: Cross multiply
    840,943.88x = 1,261,540.64 × 272,134.32
  4. Step 4: Simplify right side
    840,943.88x = 343,308,504,218.77
  5. Step 5: Solve for x
    x = 343,308,504,218.77/840,943.88
  6. Step 6: Final answer
    x = 408,241.87

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1.5x scale

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.