Home / 812,990.88-1,121,836.32-450,324

Finding the Fourth Proportional to 812,990.88, 1,121,836.32 and 450,324

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Solution

The fourth proportional to 812,990.88, 1,121,836.32 and 450,324 is: 621,396.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,990.88 : 1,121,836.32 = 450,324 : x
  2. Step 2: Convert to fraction form
    812,990.88/1,121,836.32 = 450,324/x
  3. Step 3: Cross multiply
    812,990.88x = 1,121,836.32 × 450,324
  4. Step 4: Simplify right side
    812,990.88x = 505,189,818,967.68
  5. Step 5: Solve for x
    x = 505,189,818,967.68/812,990.88
  6. Step 6: Final answer
    x = 621,396.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.