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Finding the Fourth Proportional to 18,576,800.40, 27,865,200.60 and 6,442,230.90

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Solution

The fourth proportional to 18,576,800.40, 27,865,200.60 and 6,442,230.90 is: 9,663,346.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,576,800.40 : 27,865,200.60 = 6,442,230.90 : x
  2. Step 2: Convert to fraction form
    18,576,800.40/27,865,200.60 = 6,442,230.90/x
  3. Step 3: Cross multiply
    18,576,800.40x = 27,865,200.60 × 6,442,230.90
  4. Step 4: Simplify right side
    18,576,800.40x = 179,514,056,340,018.56
  5. Step 5: Solve for x
    x = 179,514,056,340,018.56/18,576,800.40
  6. Step 6: Final answer
    x = 9,663,346.35

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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.