Home / 990,736.65-1,367,635.19-668,882.75

Finding the Fourth Proportional to 990,736.65, 1,367,635.19 and 668,882.75

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Solution

The fourth proportional to 990,736.65, 1,367,635.19 and 668,882.75 is: 923,340.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,736.65 : 1,367,635.19 = 668,882.75 : x
  2. Step 2: Convert to fraction form
    990,736.65/1,367,635.19 = 668,882.75/x
  3. Step 3: Cross multiply
    990,736.65x = 1,367,635.19 × 668,882.75
  4. Step 4: Simplify right side
    990,736.65x = 914,787,576,701.38
  5. Step 5: Solve for x
    x = 914,787,576,701.38/990,736.65
  6. Step 6: Final answer
    x = 923,340.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.