Home / 1,286,930.91-1,930,410.15-388,380.71

Finding the Fourth Proportional to 1,286,930.91, 1,930,410.15 and 388,380.71

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Solution

The fourth proportional to 1,286,930.91, 1,930,410.15 and 388,380.71 is: 582,575.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,930.91 : 1,930,410.15 = 388,380.71 : x
  2. Step 2: Convert to fraction form
    1,286,930.91/1,930,410.15 = 388,380.71/x
  3. Step 3: Cross multiply
    1,286,930.91x = 1,930,410.15 × 388,380.71
  4. Step 4: Simplify right side
    1,286,930.91x = 749,734,054,996.16
  5. Step 5: Solve for x
    x = 749,734,054,996.16/1,286,930.91
  6. Step 6: Final answer
    x = 582,575.22

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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.