Home / 1,286,927.91-1,930,405.65-388,377.71

Finding the Fourth Proportional to 1,286,927.91, 1,930,405.65 and 388,377.71

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Solution

The fourth proportional to 1,286,927.91, 1,930,405.65 and 388,377.71 is: 582,570.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,927.91 : 1,930,405.65 = 388,377.71 : x
  2. Step 2: Convert to fraction form
    1,286,927.91/1,930,405.65 = 388,377.71/x
  3. Step 3: Cross multiply
    1,286,927.91x = 1,930,405.65 × 388,377.71
  4. Step 4: Simplify right side
    1,286,927.91x = 749,726,516,066.03
  5. Step 5: Solve for x
    x = 749,726,516,066.03/1,286,927.91
  6. Step 6: Final answer
    x = 582,570.72

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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.