Home / 812,201.88-1,120,802.26-449,600.12

Finding the Fourth Proportional to 812,201.88, 1,120,802.26 and 449,600.12

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Solution

The fourth proportional to 812,201.88, 1,120,802.26 and 449,600.12 is: 620,428.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,201.88 : 1,120,802.26 = 449,600.12 : x
  2. Step 2: Convert to fraction form
    812,201.88/1,120,802.26 = 449,600.12/x
  3. Step 3: Cross multiply
    812,201.88x = 1,120,802.26 × 449,600.12
  4. Step 4: Simplify right side
    812,201.88x = 503,912,830,592.27
  5. Step 5: Solve for x
    x = 503,912,830,592.27/812,201.88
  6. Step 6: Final answer
    x = 620,428.05

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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.