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Finding the Fourth Proportional to 8,197,814.70, 12,296,722.05 and 8,085,840.30

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Solution

The fourth proportional to 8,197,814.70, 12,296,722.05 and 8,085,840.30 is: 12,128,760.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,197,814.70 : 12,296,722.05 = 8,085,840.30 : x
  2. Step 2: Convert to fraction form
    8,197,814.70/12,296,722.05 = 8,085,840.30/x
  3. Step 3: Cross multiply
    8,197,814.70x = 12,296,722.05 × 8,085,840.30
  4. Step 4: Simplify right side
    8,197,814.70x = 99,429,330,709,788.62
  5. Step 5: Solve for x
    x = 99,429,330,709,788.62/8,197,814.70
  6. Step 6: Final answer
    x = 12,128,760.45

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Double scale
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Similar ratio
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1.5x scale

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.