Home / 1,231,987.38-1,700,124.39-688,131.09

Finding the Fourth Proportional to 1,231,987.38, 1,700,124.39 and 688,131.09

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Solution

The fourth proportional to 1,231,987.38, 1,700,124.39 and 688,131.09 is: 949,610.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,987.38 : 1,700,124.39 = 688,131.09 : x
  2. Step 2: Convert to fraction form
    1,231,987.38/1,700,124.39 = 688,131.09/x
  3. Step 3: Cross multiply
    1,231,987.38x = 1,700,124.39 × 688,131.09
  4. Step 4: Simplify right side
    1,231,987.38x = 1,169,908,449,626.28
  5. Step 5: Solve for x
    x = 1,169,908,449,626.28/1,231,987.38
  6. Step 6: Final answer
    x = 949,610.74

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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.