Home / 812,450.94-1,121,174.25-439,912.11

Finding the Fourth Proportional to 812,450.94, 1,121,174.25 and 439,912.11

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Solution

The fourth proportional to 812,450.94, 1,121,174.25 and 439,912.11 is: 607,074.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,450.94 : 1,121,174.25 = 439,912.11 : x
  2. Step 2: Convert to fraction form
    812,450.94/1,121,174.25 = 439,912.11/x
  3. Step 3: Cross multiply
    812,450.94x = 1,121,174.25 × 439,912.11
  4. Step 4: Simplify right side
    812,450.94x = 493,218,129,057.20
  5. Step 5: Solve for x
    x = 493,218,129,057.20/812,450.94
  6. Step 6: Final answer
    x = 607,074.35

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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.