Home / 1,231,991.25-1,700,129.86-688,134.90

Finding the Fourth Proportional to 1,231,991.25, 1,700,129.86 and 688,134.90

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Solution

The fourth proportional to 1,231,991.25, 1,700,129.86 and 688,134.90 is: 949,616.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,991.25 : 1,700,129.86 = 688,134.90 : x
  2. Step 2: Convert to fraction form
    1,231,991.25/1,700,129.86 = 688,134.90/x
  3. Step 3: Cross multiply
    1,231,991.25x = 1,700,129.86 × 688,134.90
  4. Step 4: Simplify right side
    1,231,991.25x = 1,169,918,691,198.11
  5. Step 5: Solve for x
    x = 1,169,918,691,198.11/1,231,991.25
  6. Step 6: Final answer
    x = 949,616.07

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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.