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Finding the Fourth Proportional to 12,602,203.60, 18,890,863.80 and 6,207,221.20

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Solution

The fourth proportional to 12,602,203.60, 18,890,863.80 and 6,207,221.20 is: 9,304,703.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,602,203.60 : 18,890,863.80 = 6,207,221.20 : x
  2. Step 2: Convert to fraction form
    12,602,203.60/18,890,863.80 = 6,207,221.20/x
  3. Step 3: Cross multiply
    12,602,203.60x = 18,890,863.80 × 6,207,221.20
  4. Step 4: Simplify right side
    12,602,203.60x = 117,259,770,265,672.56
  5. Step 5: Solve for x
    x = 117,259,770,265,672.56/12,602,203.60
  6. Step 6: Final answer
    x = 9,304,703.68

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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.