Home / 812,864.33-1,121,738.09-450,287.07

Finding the Fourth Proportional to 812,864.33, 1,121,738.09 and 450,287.07

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Solution

The fourth proportional to 812,864.33, 1,121,738.09 and 450,287.07 is: 621,388.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,864.33 : 1,121,738.09 = 450,287.07 : x
  2. Step 2: Convert to fraction form
    812,864.33/1,121,738.09 = 450,287.07/x
  3. Step 3: Cross multiply
    812,864.33x = 1,121,738.09 × 450,287.07
  4. Step 4: Simplify right side
    812,864.33x = 505,104,151,395.54
  5. Step 5: Solve for x
    x = 505,104,151,395.54/812,864.33
  6. Step 6: Final answer
    x = 621,388.01

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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.