Home / 1,990,109.20-2,983,414.20-1,191,708.40

Finding the Fourth Proportional to 1,990,109.20, 2,983,414.20 and 1,191,708.40

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Solution

The fourth proportional to 1,990,109.20, 2,983,414.20 and 1,191,708.40 is: 1,786,514.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990,109.20 : 2,983,414.20 = 1,191,708.40 : x
  2. Step 2: Convert to fraction form
    1,990,109.20/2,983,414.20 = 1,191,708.40/x
  3. Step 3: Cross multiply
    1,990,109.20x = 2,983,414.20 × 1,191,708.40
  4. Step 4: Simplify right side
    1,990,109.20x = 3,555,359,762,819.28
  5. Step 5: Solve for x
    x = 3,555,359,762,819.28/1,990,109.20
  6. Step 6: Final answer
    x = 1,786,514.91

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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.