Home / 641,845.60-885,759.24-383,988.04

Finding the Fourth Proportional to 641,845.60, 885,759.24 and 383,988.04

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Solution

The fourth proportional to 641,845.60, 885,759.24 and 383,988.04 is: 529,910.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,845.60 : 885,759.24 = 383,988.04 : x
  2. Step 2: Convert to fraction form
    641,845.60/885,759.24 = 383,988.04/x
  3. Step 3: Cross multiply
    641,845.60x = 885,759.24 × 383,988.04
  4. Step 4: Simplify right side
    641,845.60x = 340,120,954,479.49
  5. Step 5: Solve for x
    x = 340,120,954,479.49/641,845.60
  6. Step 6: Final answer
    x = 529,910.86

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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.