Home / 1,638,540.80-2,261,197.44-913,434.56

Finding the Fourth Proportional to 1,638,540.80, 2,261,197.44 and 913,434.56

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Solution

The fourth proportional to 1,638,540.80, 2,261,197.44 and 913,434.56 is: 1,260,545.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638,540.80 : 2,261,197.44 = 913,434.56 : x
  2. Step 2: Convert to fraction form
    1,638,540.80/2,261,197.44 = 913,434.56/x
  3. Step 3: Cross multiply
    1,638,540.80x = 2,261,197.44 × 913,434.56
  4. Step 4: Simplify right side
    1,638,540.80x = 2,065,455,888,679.53
  5. Step 5: Solve for x
    x = 2,065,455,888,679.53/1,638,540.80
  6. Step 6: Final answer
    x = 1,260,545.90

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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.