Home / 855,202.59-1,179,213.80-639,651.87

Finding the Fourth Proportional to 855,202.59, 1,179,213.80 and 639,651.87

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Solution

The fourth proportional to 855,202.59, 1,179,213.80 and 639,651.87 is: 881,997.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,202.59 : 1,179,213.80 = 639,651.87 : x
  2. Step 2: Convert to fraction form
    855,202.59/1,179,213.80 = 639,651.87/x
  3. Step 3: Cross multiply
    855,202.59x = 1,179,213.80 × 639,651.87
  4. Step 4: Simplify right side
    855,202.59x = 754,286,309,101.55
  5. Step 5: Solve for x
    x = 754,286,309,101.55/855,202.59
  6. Step 6: Final answer
    x = 881,997.22

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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.