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Finding the Fourth Proportional to 8,652,238.90, 12,978,358.35 and 8,652,238.90

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Solution

The fourth proportional to 8,652,238.90, 12,978,358.35 and 8,652,238.90 is: 12,978,358.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,652,238.90 : 12,978,358.35 = 8,652,238.90 : x
  2. Step 2: Convert to fraction form
    8,652,238.90/12,978,358.35 = 8,652,238.90/x
  3. Step 3: Cross multiply
    8,652,238.90x = 12,978,358.35 × 8,652,238.90
  4. Step 4: Simplify right side
    8,652,238.90x = 112,291,856,974,009.81
  5. Step 5: Solve for x
    x = 112,291,856,974,009.81/8,652,238.90
  6. Step 6: Final answer
    x = 12,978,358.35

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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.