Home / 812,845.75-1,121,713.11-450,262.01

Finding the Fourth Proportional to 812,845.75, 1,121,713.11 and 450,262.01

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Solution

The fourth proportional to 812,845.75, 1,121,713.11 and 450,262.01 is: 621,353.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,845.75 : 1,121,713.11 = 450,262.01 : x
  2. Step 2: Convert to fraction form
    812,845.75/1,121,713.11 = 450,262.01/x
  3. Step 3: Cross multiply
    812,845.75x = 1,121,713.11 × 450,262.01
  4. Step 4: Simplify right side
    812,845.75x = 505,064,796,046.60
  5. Step 5: Solve for x
    x = 505,064,796,046.60/812,845.75
  6. Step 6: Final answer
    x = 621,353.80

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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.