Home / 8,420,137.92-12,619,468.71-4,103,218.62

Finding the Fourth Proportional to 8,420,137.92, 12,619,468.71 and 4,103,218.62

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Solution

The fourth proportional to 8,420,137.92, 12,619,468.71 and 4,103,218.62 is: 6,149,595.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,420,137.92 : 12,619,468.71 = 4,103,218.62 : x
  2. Step 2: Convert to fraction form
    8,420,137.92/12,619,468.71 = 4,103,218.62/x
  3. Step 3: Cross multiply
    8,420,137.92x = 12,619,468.71 × 4,103,218.62
  4. Step 4: Simplify right side
    8,420,137.92x = 51,780,438,985,379.38
  5. Step 5: Solve for x
    x = 51,780,438,985,379.38/8,420,137.92
  6. Step 6: Final answer
    x = 6,149,595.11

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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.