Home / 680,664.60-938,620.91-451,142.19

Finding the Fourth Proportional to 680,664.60, 938,620.91 and 451,142.19

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Solution

The fourth proportional to 680,664.60, 938,620.91 and 451,142.19 is: 622,114.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,664.60 : 938,620.91 = 451,142.19 : x
  2. Step 2: Convert to fraction form
    680,664.60/938,620.91 = 451,142.19/x
  3. Step 3: Cross multiply
    680,664.60x = 938,620.91 × 451,142.19
  4. Step 4: Simplify right side
    680,664.60x = 423,451,490,661.48
  5. Step 5: Solve for x
    x = 423,451,490,661.48/680,664.60
  6. Step 6: Final answer
    x = 622,114.75

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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.