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Finding the Fourth Proportional to 893,862.30, 1,340,793.45 and 820,379.10

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Solution

The fourth proportional to 893,862.30, 1,340,793.45 and 820,379.10 is: 1,230,568.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    893,862.30 : 1,340,793.45 = 820,379.10 : x
  2. Step 2: Convert to fraction form
    893,862.30/1,340,793.45 = 820,379.10/x
  3. Step 3: Cross multiply
    893,862.30x = 1,340,793.45 × 820,379.10
  4. Step 4: Simplify right side
    893,862.30x = 1,099,958,923,796.90
  5. Step 5: Solve for x
    x = 1,099,958,923,796.90/893,862.30
  6. Step 6: Final answer
    x = 1,230,568.65

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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.