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Finding the Fourth Proportional to 12,409,679.02, 18,614,524.06 and 3,890,679.78

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Solution

The fourth proportional to 12,409,679.02, 18,614,524.06 and 3,890,679.78 is: 5,836,021.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,409,679.02 : 18,614,524.06 = 3,890,679.78 : x
  2. Step 2: Convert to fraction form
    12,409,679.02/18,614,524.06 = 3,890,679.78/x
  3. Step 3: Cross multiply
    12,409,679.02x = 18,614,524.06 × 3,890,679.78
  4. Step 4: Simplify right side
    12,409,679.02x = 72,423,152,374,565.50
  5. Step 5: Solve for x
    x = 72,423,152,374,565.50/12,409,679.02
  6. Step 6: Final answer
    x = 5,836,021.40

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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.