Home / 645,745.11-968,835.64-285,866.32

Finding the Fourth Proportional to 645,745.11, 968,835.64 and 285,866.32

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Solution

The fourth proportional to 645,745.11, 968,835.64 and 285,866.32 is: 428,895.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,745.11 : 968,835.64 = 285,866.32 : x
  2. Step 2: Convert to fraction form
    645,745.11/968,835.64 = 285,866.32/x
  3. Step 3: Cross multiply
    645,745.11x = 968,835.64 × 285,866.32
  4. Step 4: Simplify right side
    645,745.11x = 276,957,482,228.40
  5. Step 5: Solve for x
    x = 276,957,482,228.40/645,745.11
  6. Step 6: Final answer
    x = 428,895.98

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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.