Home / 1,123,286.20-1,684,929.30-1,081,295.80

Finding the Fourth Proportional to 1,123,286.20, 1,684,929.30 and 1,081,295.80

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Solution

The fourth proportional to 1,123,286.20, 1,684,929.30 and 1,081,295.80 is: 1,621,943.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,286.20 : 1,684,929.30 = 1,081,295.80 : x
  2. Step 2: Convert to fraction form
    1,123,286.20/1,684,929.30 = 1,081,295.80/x
  3. Step 3: Cross multiply
    1,123,286.20x = 1,684,929.30 × 1,081,295.80
  4. Step 4: Simplify right side
    1,123,286.20x = 1,821,906,975,386.94
  5. Step 5: Solve for x
    x = 1,821,906,975,386.94/1,123,286.20
  6. Step 6: Final answer
    x = 1,621,943.70

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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.