Home / 1,427,200.20-2,140,800.30-1,405,081.80

Finding the Fourth Proportional to 1,427,200.20, 2,140,800.30 and 1,405,081.80

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Solution

The fourth proportional to 1,427,200.20, 2,140,800.30 and 1,405,081.80 is: 2,107,622.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,427,200.20 : 2,140,800.30 = 1,405,081.80 : x
  2. Step 2: Convert to fraction form
    1,427,200.20/2,140,800.30 = 1,405,081.80/x
  3. Step 3: Cross multiply
    1,427,200.20x = 2,140,800.30 × 1,405,081.80
  4. Step 4: Simplify right side
    1,427,200.20x = 3,007,999,538,964.54
  5. Step 5: Solve for x
    x = 3,007,999,538,964.54/1,427,200.20
  6. Step 6: Final answer
    x = 2,107,622.70

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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.