Home / 1,215,425.40-1,821,680.10-505,087.80

Finding the Fourth Proportional to 1,215,425.40, 1,821,680.10 and 505,087.80

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Solution

The fourth proportional to 1,215,425.40, 1,821,680.10 and 505,087.80 is: 757,025.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,425.40 : 1,821,680.10 = 505,087.80 : x
  2. Step 2: Convert to fraction form
    1,215,425.40/1,821,680.10 = 505,087.80/x
  3. Step 3: Cross multiply
    1,215,425.40x = 1,821,680.10 × 505,087.80
  4. Step 4: Simplify right side
    1,215,425.40x = 920,108,394,012.78
  5. Step 5: Solve for x
    x = 920,108,394,012.78/1,215,425.40
  6. Step 6: Final answer
    x = 757,025.81

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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.