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Finding the Fourth Proportional to 5,780,647.92, 8,667,786.60 and 1,991,005.68

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Solution

The fourth proportional to 5,780,647.92, 8,667,786.60 and 1,991,005.68 is: 2,985,411.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,780,647.92 : 8,667,786.60 = 1,991,005.68 : x
  2. Step 2: Convert to fraction form
    5,780,647.92/8,667,786.60 = 1,991,005.68/x
  3. Step 3: Cross multiply
    5,780,647.92x = 8,667,786.60 × 1,991,005.68
  4. Step 4: Simplify right side
    5,780,647.92x = 17,257,612,353,627.89
  5. Step 5: Solve for x
    x = 17,257,612,353,627.89/5,780,647.92
  6. Step 6: Final answer
    x = 2,985,411.43

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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.