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Finding the Fourth Proportional to 8,229,689.20, 12,344,533.80 and 7,669,817.20

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Solution

The fourth proportional to 8,229,689.20, 12,344,533.80 and 7,669,817.20 is: 11,504,725.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,229,689.20 : 12,344,533.80 = 7,669,817.20 : x
  2. Step 2: Convert to fraction form
    8,229,689.20/12,344,533.80 = 7,669,817.20/x
  3. Step 3: Cross multiply
    8,229,689.20x = 12,344,533.80 × 7,669,817.20
  4. Step 4: Simplify right side
    8,229,689.20x = 94,680,317,665,221.38
  5. Step 5: Solve for x
    x = 94,680,317,665,221.38/8,229,689.20
  6. Step 6: Final answer
    x = 11,504,725.80

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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.