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Finding the Fourth Proportional to 6,321,471.60, 8,723,630.79 and 3,420,862.47

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Solution

The fourth proportional to 6,321,471.60, 8,723,630.79 and 3,420,862.47 is: 4,720,790.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,321,471.60 : 8,723,630.79 = 3,420,862.47 : x
  2. Step 2: Convert to fraction form
    6,321,471.60/8,723,630.79 = 3,420,862.47/x
  3. Step 3: Cross multiply
    6,321,471.60x = 8,723,630.79 × 3,420,862.47
  4. Step 4: Simplify right side
    6,321,471.60x = 29,842,341,171,647.45
  5. Step 5: Solve for x
    x = 29,842,341,171,647.45/6,321,471.60
  6. Step 6: Final answer
    x = 4,720,790.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.