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Finding the Fourth Proportional to 8,691,814.80, 13,042,387.80 and 3,643,635.60

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Solution

The fourth proportional to 8,691,814.80, 13,042,387.80 and 3,643,635.60 is: 5,467,409.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,691,814.80 : 13,042,387.80 = 3,643,635.60 : x
  2. Step 2: Convert to fraction form
    8,691,814.80/13,042,387.80 = 3,643,635.60/x
  3. Step 3: Cross multiply
    8,691,814.80x = 13,042,387.80 × 3,643,635.60
  4. Step 4: Simplify right side
    8,691,814.80x = 47,521,708,497,085.69
  5. Step 5: Solve for x
    x = 47,521,708,497,085.69/8,691,814.80
  6. Step 6: Final answer
    x = 5,467,409.23

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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.