Home / 1,275,694.20-1,913,541.30-743,815.80

Finding the Fourth Proportional to 1,275,694.20, 1,913,541.30 and 743,815.80

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Solution

The fourth proportional to 1,275,694.20, 1,913,541.30 and 743,815.80 is: 1,115,723.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275,694.20 : 1,913,541.30 = 743,815.80 : x
  2. Step 2: Convert to fraction form
    1,275,694.20/1,913,541.30 = 743,815.80/x
  3. Step 3: Cross multiply
    1,275,694.20x = 1,913,541.30 × 743,815.80
  4. Step 4: Simplify right side
    1,275,694.20x = 1,423,322,252,892.54
  5. Step 5: Solve for x
    x = 1,423,322,252,892.54/1,275,694.20
  6. Step 6: Final answer
    x = 1,115,723.70

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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.