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Finding the Fourth Proportional to 8,394,036.80, 12,572,392.80 and 6,494,619.20

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Solution

The fourth proportional to 8,394,036.80, 12,572,392.80 and 6,494,619.20 is: 9,727,489.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,394,036.80 : 12,572,392.80 = 6,494,619.20 : x
  2. Step 2: Convert to fraction form
    8,394,036.80/12,572,392.80 = 6,494,619.20/x
  3. Step 3: Cross multiply
    8,394,036.80x = 12,572,392.80 × 6,494,619.20
  4. Step 4: Simplify right side
    8,394,036.80x = 81,652,903,668,821.77
  5. Step 5: Solve for x
    x = 81,652,903,668,821.77/8,394,036.80
  6. Step 6: Final answer
    x = 9,727,489.36

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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.