Home / 1,213,786.20-1,821,408.30-503,740.20

Finding the Fourth Proportional to 1,213,786.20, 1,821,408.30 and 503,740.20

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Solution

The fourth proportional to 1,213,786.20, 1,821,408.30 and 503,740.20 is: 755,912.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,786.20 : 1,821,408.30 = 503,740.20 : x
  2. Step 2: Convert to fraction form
    1,213,786.20/1,821,408.30 = 503,740.20/x
  3. Step 3: Cross multiply
    1,213,786.20x = 1,821,408.30 × 503,740.20
  4. Step 4: Simplify right side
    1,213,786.20x = 917,516,581,323.66
  5. Step 5: Solve for x
    x = 917,516,581,323.66/1,213,786.20
  6. Step 6: Final answer
    x = 755,912.85

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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.