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Finding the Fourth Proportional to 12,887,788.80, 19,331,245.80 and 3,303,261.30

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Solution

The fourth proportional to 12,887,788.80, 19,331,245.80 and 3,303,261.30 is: 4,954,779.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,887,788.80 : 19,331,245.80 = 3,303,261.30 : x
  2. Step 2: Convert to fraction form
    12,887,788.80/19,331,245.80 = 3,303,261.30/x
  3. Step 3: Cross multiply
    12,887,788.80x = 19,331,245.80 × 3,303,261.30
  4. Step 4: Simplify right side
    12,887,788.80x = 63,856,156,131,927.54
  5. Step 5: Solve for x
    x = 63,856,156,131,927.54/12,887,788.80
  6. Step 6: Final answer
    x = 4,954,779.84

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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.