Home / 2,523,011.70-3,785,120.20-840,129.78

Finding the Fourth Proportional to 2,523,011.70, 3,785,120.20 and 840,129.78

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Solution

The fourth proportional to 2,523,011.70, 3,785,120.20 and 840,129.78 is: 1,260,395.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,523,011.70 : 3,785,120.20 = 840,129.78 : x
  2. Step 2: Convert to fraction form
    2,523,011.70/3,785,120.20 = 840,129.78/x
  3. Step 3: Cross multiply
    2,523,011.70x = 3,785,120.20 × 840,129.78
  4. Step 4: Simplify right side
    2,523,011.70x = 3,179,992,200,899.56
  5. Step 5: Solve for x
    x = 3,179,992,200,899.56/2,523,011.70
  6. Step 6: Final answer
    x = 1,260,395.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.