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Finding the Fourth Proportional to 8,656,285.60, 12,984,428.40 and 8,325,611.20

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Solution

The fourth proportional to 8,656,285.60, 12,984,428.40 and 8,325,611.20 is: 12,488,416.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,656,285.60 : 12,984,428.40 = 8,325,611.20 : x
  2. Step 2: Convert to fraction form
    8,656,285.60/12,984,428.40 = 8,325,611.20/x
  3. Step 3: Cross multiply
    8,656,285.60x = 12,984,428.40 × 8,325,611.20
  4. Step 4: Simplify right side
    8,656,285.60x = 108,103,302,512,638.08
  5. Step 5: Solve for x
    x = 108,103,302,512,638.08/8,656,285.60
  6. Step 6: Final answer
    x = 12,488,416.80

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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.