Home / 645,745.42-968,836.11-285,866.64

Finding the Fourth Proportional to 645,745.42, 968,836.11 and 285,866.64

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Solution

The fourth proportional to 645,745.42, 968,836.11 and 285,866.64 is: 428,896.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,745.42 : 968,836.11 = 285,866.64 : x
  2. Step 2: Convert to fraction form
    645,745.42/968,836.11 = 285,866.64/x
  3. Step 3: Cross multiply
    645,745.42x = 968,836.11 × 285,866.64
  4. Step 4: Simplify right side
    645,745.42x = 276,957,923,476.37
  5. Step 5: Solve for x
    x = 276,957,923,476.37/645,745.42
  6. Step 6: Final answer
    x = 428,896.46

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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.