Home / 2,785,790.20-4,179,209.78-1,985,085.40

Finding the Fourth Proportional to 2,785,790.20, 4,179,209.78 and 1,985,085.40

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Solution

The fourth proportional to 2,785,790.20, 4,179,209.78 and 1,985,085.40 is: 2,978,001.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,785,790.20 : 4,179,209.78 = 1,985,085.40 : x
  2. Step 2: Convert to fraction form
    2,785,790.20/4,179,209.78 = 1,985,085.40/x
  3. Step 3: Cross multiply
    2,785,790.20x = 4,179,209.78 × 1,985,085.40
  4. Step 4: Simplify right side
    2,785,790.20x = 8,296,088,317,815.21
  5. Step 5: Solve for x
    x = 8,296,088,317,815.21/2,785,790.20
  6. Step 6: Final answer
    x = 2,978,001.83

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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.