Home / 1,213,989.20-1,821,712.80-503,943.20

Finding the Fourth Proportional to 1,213,989.20, 1,821,712.80 and 503,943.20

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Solution

The fourth proportional to 1,213,989.20, 1,821,712.80 and 503,943.20 is: 756,217.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,989.20 : 1,821,712.80 = 503,943.20 : x
  2. Step 2: Convert to fraction form
    1,213,989.20/1,821,712.80 = 503,943.20/x
  3. Step 3: Cross multiply
    1,213,989.20x = 1,821,712.80 × 503,943.20
  4. Step 4: Simplify right side
    1,213,989.20x = 918,039,777,912.96
  5. Step 5: Solve for x
    x = 918,039,777,912.96/1,213,989.20
  6. Step 6: Final answer
    x = 756,217.42

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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.