Home / 1,215,441.40-1,821,704.10-505,103.80

Finding the Fourth Proportional to 1,215,441.40, 1,821,704.10 and 505,103.80

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Solution

The fourth proportional to 1,215,441.40, 1,821,704.10 and 505,103.80 is: 757,049.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,441.40 : 1,821,704.10 = 505,103.80 : x
  2. Step 2: Convert to fraction form
    1,215,441.40/1,821,704.10 = 505,103.80/x
  3. Step 3: Cross multiply
    1,215,441.40x = 1,821,704.10 × 505,103.80
  4. Step 4: Simplify right side
    1,215,441.40x = 920,149,663,385.58
  5. Step 5: Solve for x
    x = 920,149,663,385.58/1,215,441.40
  6. Step 6: Final answer
    x = 757,049.80

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Double scale
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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.