Home / 1,993,139.11-2,990,181.71-645,301.81

Finding the Fourth Proportional to 1,993,139.11, 2,990,181.71 and 645,301.81

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Solution

The fourth proportional to 1,993,139.11, 2,990,181.71 and 645,301.81 is: 968,105.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,993,139.11 : 2,990,181.71 = 645,301.81 : x
  2. Step 2: Convert to fraction form
    1,993,139.11/2,990,181.71 = 645,301.81/x
  3. Step 3: Cross multiply
    1,993,139.11x = 2,990,181.71 × 645,301.81
  4. Step 4: Simplify right side
    1,993,139.11x = 1,929,569,669,691.90
  5. Step 5: Solve for x
    x = 1,929,569,669,691.90/1,993,139.11
  6. Step 6: Final answer
    x = 968,105.87

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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.