Home / 451,538.73-622,584.77-290,400.57

Finding the Fourth Proportional to 451,538.73, 622,584.77 and 290,400.57

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Solution

The fourth proportional to 451,538.73, 622,584.77 and 290,400.57 is: 400,406.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,538.73 : 622,584.77 = 290,400.57 : x
  2. Step 2: Convert to fraction form
    451,538.73/622,584.77 = 290,400.57/x
  3. Step 3: Cross multiply
    451,538.73x = 622,584.77 × 290,400.57
  4. Step 4: Simplify right side
    451,538.73x = 180,798,970,629.32
  5. Step 5: Solve for x
    x = 180,798,970,629.32/451,538.73
  6. Step 6: Final answer
    x = 400,406.34

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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.