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Finding the Fourth Proportional to 7,985,510.70, 11,978,266.05 and 2,228,233.20

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Solution

The fourth proportional to 7,985,510.70, 11,978,266.05 and 2,228,233.20 is: 3,342,349.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,985,510.70 : 11,978,266.05 = 2,228,233.20 : x
  2. Step 2: Convert to fraction form
    7,985,510.70/11,978,266.05 = 2,228,233.20/x
  3. Step 3: Cross multiply
    7,985,510.70x = 11,978,266.05 × 2,228,233.20
  4. Step 4: Simplify right side
    7,985,510.70x = 26,690,370,091,042.86
  5. Step 5: Solve for x
    x = 26,690,370,091,042.86/7,985,510.70
  6. Step 6: Final answer
    x = 3,342,349.80

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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.