Home / 1,231,999.62-1,700,141.40-688,143.03

Finding the Fourth Proportional to 1,231,999.62, 1,700,141.40 and 688,143.03

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Solution

The fourth proportional to 1,231,999.62, 1,700,141.40 and 688,143.03 is: 949,627.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,999.62 : 1,700,141.40 = 688,143.03 : x
  2. Step 2: Convert to fraction form
    1,231,999.62/1,700,141.40 = 688,143.03/x
  3. Step 3: Cross multiply
    1,231,999.62x = 1,700,141.40 × 688,143.03
  4. Step 4: Simplify right side
    1,231,999.62x = 1,169,940,454,424.44
  5. Step 5: Solve for x
    x = 1,169,940,454,424.44/1,231,999.62
  6. Step 6: Final answer
    x = 949,627.29

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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.