Home / 1,086,431.40-1,629,647.10-455,279.40

Finding the Fourth Proportional to 1,086,431.40, 1,629,647.10 and 455,279.40

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Solution

The fourth proportional to 1,086,431.40, 1,629,647.10 and 455,279.40 is: 682,919.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086,431.40 : 1,629,647.10 = 455,279.40 : x
  2. Step 2: Convert to fraction form
    1,086,431.40/1,629,647.10 = 455,279.40/x
  3. Step 3: Cross multiply
    1,086,431.40x = 1,629,647.10 × 455,279.40
  4. Step 4: Simplify right side
    1,086,431.40x = 741,944,753,899.74
  5. Step 5: Solve for x
    x = 741,944,753,899.74/1,086,431.40
  6. Step 6: Final answer
    x = 682,919.10

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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.