Home / 639,105.59-881,965.06-352,625.65

Finding the Fourth Proportional to 639,105.59, 881,965.06 and 352,625.65

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Solution

The fourth proportional to 639,105.59, 881,965.06 and 352,625.65 is: 486,623.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,105.59 : 881,965.06 = 352,625.65 : x
  2. Step 2: Convert to fraction form
    639,105.59/881,965.06 = 352,625.65/x
  3. Step 3: Cross multiply
    639,105.59x = 881,965.06 × 352,625.65
  4. Step 4: Simplify right side
    639,105.59x = 311,003,504,434.37
  5. Step 5: Solve for x
    x = 311,003,504,434.37/639,105.59
  6. Step 6: Final answer
    x = 486,623.04

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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.