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Finding the Fourth Proportional to 12,601,607.85, 18,902,411.78 and 12,601,607.85

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Solution

The fourth proportional to 12,601,607.85, 18,902,411.78 and 12,601,607.85 is: 18,902,411.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,601,607.85 : 18,902,411.78 = 12,601,607.85 : x
  2. Step 2: Convert to fraction form
    12,601,607.85/18,902,411.78 = 12,601,607.85/x
  3. Step 3: Cross multiply
    12,601,607.85x = 18,902,411.78 × 12,601,607.85
  4. Step 4: Simplify right side
    12,601,607.85x = 238,200,780,607,772.41
  5. Step 5: Solve for x
    x = 238,200,780,607,772.41/12,601,607.85
  6. Step 6: Final answer
    x = 18,902,411.78

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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.