Home / 812,492.94-1,121,226.48-449,909.04

Finding the Fourth Proportional to 812,492.94, 1,121,226.48 and 449,909.04

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Solution

The fourth proportional to 812,492.94, 1,121,226.48 and 449,909.04 is: 620,866.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,492.94 : 1,121,226.48 = 449,909.04 : x
  2. Step 2: Convert to fraction form
    812,492.94/1,121,226.48 = 449,909.04/x
  3. Step 3: Cross multiply
    812,492.94x = 1,121,226.48 × 449,909.04
  4. Step 4: Simplify right side
    812,492.94x = 504,449,929,239.38
  5. Step 5: Solve for x
    x = 504,449,929,239.38/812,492.94
  6. Step 6: Final answer
    x = 620,866.85

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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.