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Finding the Fourth Proportional to 6,644,808.80, 9,971,878.80 and 2,861,007.20

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Solution

The fourth proportional to 6,644,808.80, 9,971,878.80 and 2,861,007.20 is: 4,293,519.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,644,808.80 : 9,971,878.80 = 2,861,007.20 : x
  2. Step 2: Convert to fraction form
    6,644,808.80/9,971,878.80 = 2,861,007.20/x
  3. Step 3: Cross multiply
    6,644,808.80x = 9,971,878.80 × 2,861,007.20
  4. Step 4: Simplify right side
    6,644,808.80x = 28,529,617,044,327.36
  5. Step 5: Solve for x
    x = 28,529,617,044,327.36/6,644,808.80
  6. Step 6: Final answer
    x = 4,293,519.63

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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.