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Finding the Fourth Proportional to 8,257,485.78, 12,386,228.67 and 8,257,485.78

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Solution

The fourth proportional to 8,257,485.78, 12,386,228.67 and 8,257,485.78 is: 12,386,228.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,257,485.78 : 12,386,228.67 = 8,257,485.78 : x
  2. Step 2: Convert to fraction form
    8,257,485.78/12,386,228.67 = 8,257,485.78/x
  3. Step 3: Cross multiply
    8,257,485.78x = 12,386,228.67 × 8,257,485.78
  4. Step 4: Simplify right side
    8,257,485.78x = 102,279,107,110,353.31
  5. Step 5: Solve for x
    x = 102,279,107,110,353.31/8,257,485.78
  6. Step 6: Final answer
    x = 12,386,228.67

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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.