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Finding the Fourth Proportional to 1,957,968.60, 2,934,620.10 and 820,728.60

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Solution

The fourth proportional to 1,957,968.60, 2,934,620.10 and 820,728.60 is: 1,230,115.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,957,968.60 : 2,934,620.10 = 820,728.60 : x
  2. Step 2: Convert to fraction form
    1,957,968.60/2,934,620.10 = 820,728.60/x
  3. Step 3: Cross multiply
    1,957,968.60x = 2,934,620.10 × 820,728.60
  4. Step 4: Simplify right side
    1,957,968.60x = 2,408,526,646,204.86
  5. Step 5: Solve for x
    x = 2,408,526,646,204.86/1,957,968.60
  6. Step 6: Final answer
    x = 1,230,115.05

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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.