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Finding the Fourth Proportional to 8,472,684.72, 12,709,858.68 and 2,407,696.32

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Solution

The fourth proportional to 8,472,684.72, 12,709,858.68 and 2,407,696.32 is: 3,611,780.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,472,684.72 : 12,709,858.68 = 2,407,696.32 : x
  2. Step 2: Convert to fraction form
    8,472,684.72/12,709,858.68 = 2,407,696.32/x
  3. Step 3: Cross multiply
    8,472,684.72x = 12,709,858.68 × 2,407,696.32
  4. Step 4: Simplify right side
    8,472,684.72x = 30,601,479,971,556.05
  5. Step 5: Solve for x
    x = 30,601,479,971,556.05/8,472,684.72
  6. Step 6: Final answer
    x = 3,611,780.80

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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.