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Finding the Fourth Proportional to 12,364,045.56, 18,532,978.94 and 4,158,876.78

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Solution

The fourth proportional to 12,364,045.56, 18,532,978.94 and 4,158,876.78 is: 6,233,912.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,364,045.56 : 18,532,978.94 = 4,158,876.78 : x
  2. Step 2: Convert to fraction form
    12,364,045.56/18,532,978.94 = 4,158,876.78/x
  3. Step 3: Cross multiply
    12,364,045.56x = 18,532,978.94 × 4,158,876.78
  4. Step 4: Simplify right side
    12,364,045.56x = 77,076,375,757,000.62
  5. Step 5: Solve for x
    x = 77,076,375,757,000.62/12,364,045.56
  6. Step 6: Final answer
    x = 6,233,912.31

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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.