Home / 8,579,186.29-12,868,768.56-2,189,438.78

Finding the Fourth Proportional to 8,579,186.29, 12,868,768.56 and 2,189,438.78

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Solution

The fourth proportional to 8,579,186.29, 12,868,768.56 and 2,189,438.78 is: 3,284,155.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,579,186.29 : 12,868,768.56 = 2,189,438.78 : x
  2. Step 2: Convert to fraction form
    8,579,186.29/12,868,768.56 = 2,189,438.78/x
  3. Step 3: Cross multiply
    8,579,186.29x = 12,868,768.56 × 2,189,438.78
  4. Step 4: Simplify right side
    8,579,186.29x = 28,175,380,936,108.75
  5. Step 5: Solve for x
    x = 28,175,380,936,108.75/8,579,186.29
  6. Step 6: Final answer
    x = 3,284,155.40

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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.