Home / 812,035.86-1,120,580.91-449,460.42

Finding the Fourth Proportional to 812,035.86, 1,120,580.91 and 449,460.42

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Solution

The fourth proportional to 812,035.86, 1,120,580.91 and 449,460.42 is: 620,239.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,035.86 : 1,120,580.91 = 449,460.42 : x
  2. Step 2: Convert to fraction form
    812,035.86/1,120,580.91 = 449,460.42/x
  3. Step 3: Cross multiply
    812,035.86x = 1,120,580.91 × 449,460.42
  4. Step 4: Simplify right side
    812,035.86x = 503,656,766,452.58
  5. Step 5: Solve for x
    x = 503,656,766,452.58/812,035.86
  6. Step 6: Final answer
    x = 620,239.56

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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.