Home / 638,611.36-881,264.82-352,131.37

Finding the Fourth Proportional to 638,611.36, 881,264.82 and 352,131.37

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Solution

The fourth proportional to 638,611.36, 881,264.82 and 352,131.37 is: 485,930.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,611.36 : 881,264.82 = 352,131.37 : x
  2. Step 2: Convert to fraction form
    638,611.36/881,264.82 = 352,131.37/x
  3. Step 3: Cross multiply
    638,611.36x = 881,264.82 × 352,131.37
  4. Step 4: Simplify right side
    638,611.36x = 310,320,988,399.40
  5. Step 5: Solve for x
    x = 310,320,988,399.40/638,611.36
  6. Step 6: Final answer
    x = 485,930.89

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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.