Home / 1,340,991.20-2,013,819.60-711,135.20

Finding the Fourth Proportional to 1,340,991.20, 2,013,819.60 and 711,135.20

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Solution

The fourth proportional to 1,340,991.20, 2,013,819.60 and 711,135.20 is: 1,067,939.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,340,991.20 : 2,013,819.60 = 711,135.20 : x
  2. Step 2: Convert to fraction form
    1,340,991.20/2,013,819.60 = 711,135.20/x
  3. Step 3: Cross multiply
    1,340,991.20x = 2,013,819.60 × 711,135.20
  4. Step 4: Simplify right side
    1,340,991.20x = 1,432,098,004,009.92
  5. Step 5: Solve for x
    x = 1,432,098,004,009.92/1,340,991.20
  6. Step 6: Final answer
    x = 1,067,939.90

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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.