Home / 812,368.05-1,121,102.92-449,791.90

Finding the Fourth Proportional to 812,368.05, 1,121,102.92 and 449,791.90

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Solution

The fourth proportional to 812,368.05, 1,121,102.92 and 449,791.90 is: 620,732.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,368.05 : 1,121,102.92 = 449,791.90 : x
  2. Step 2: Convert to fraction form
    812,368.05/1,121,102.92 = 449,791.90/x
  3. Step 3: Cross multiply
    812,368.05x = 1,121,102.92 × 449,791.90
  4. Step 4: Simplify right side
    812,368.05x = 504,263,017,890.38
  5. Step 5: Solve for x
    x = 504,263,017,890.38/812,368.05
  6. Step 6: Final answer
    x = 620,732.21

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1.5x scale

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.