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Finding the Fourth Proportional to 6,288,761.38, 8,678,407.64 and 3,497,865.78

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Solution

The fourth proportional to 6,288,761.38, 8,678,407.64 and 3,497,865.78 is: 4,827,008.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,288,761.38 : 8,678,407.64 = 3,497,865.78 : x
  2. Step 2: Convert to fraction form
    6,288,761.38/8,678,407.64 = 3,497,865.78/x
  3. Step 3: Cross multiply
    6,288,761.38x = 8,678,407.64 × 3,497,865.78
  4. Step 4: Simplify right side
    6,288,761.38x = 30,355,905,108,846.56
  5. Step 5: Solve for x
    x = 30,355,905,108,846.56/6,288,761.38
  6. Step 6: Final answer
    x = 4,827,008.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.