Home / 1,115,136.31-1,538,858.15-656,277.88

Finding the Fourth Proportional to 1,115,136.31, 1,538,858.15 and 656,277.88

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Solution

The fourth proportional to 1,115,136.31, 1,538,858.15 and 656,277.88 is: 905,645.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115,136.31 : 1,538,858.15 = 656,277.88 : x
  2. Step 2: Convert to fraction form
    1,115,136.31/1,538,858.15 = 656,277.88/x
  3. Step 3: Cross multiply
    1,115,136.31x = 1,538,858.15 × 656,277.88
  4. Step 4: Simplify right side
    1,115,136.31x = 1,009,918,553,327.04
  5. Step 5: Solve for x
    x = 1,009,918,553,327.04/1,115,136.31
  6. Step 6: Final answer
    x = 905,645.84

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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.