Home / 641,722.57-885,584.15-355,247.44

Finding the Fourth Proportional to 641,722.57, 885,584.15 and 355,247.44

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Solution

The fourth proportional to 641,722.57, 885,584.15 and 355,247.44 is: 490,245.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,722.57 : 885,584.15 = 355,247.44 : x
  2. Step 2: Convert to fraction form
    641,722.57/885,584.15 = 355,247.44/x
  3. Step 3: Cross multiply
    641,722.57x = 885,584.15 × 355,247.44
  4. Step 4: Simplify right side
    641,722.57x = 314,601,502,192.08
  5. Step 5: Solve for x
    x = 314,601,502,192.08/641,722.57
  6. Step 6: Final answer
    x = 490,245.34

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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.