Home / 3,520,665.20-5,280,997.80-861,273.20

Finding the Fourth Proportional to 3,520,665.20, 5,280,997.80 and 861,273.20

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Solution

The fourth proportional to 3,520,665.20, 5,280,997.80 and 861,273.20 is: 1,291,909.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,520,665.20 : 5,280,997.80 = 861,273.20 : x
  2. Step 2: Convert to fraction form
    3,520,665.20/5,280,997.80 = 861,273.20/x
  3. Step 3: Cross multiply
    3,520,665.20x = 5,280,997.80 × 861,273.20
  4. Step 4: Simplify right side
    3,520,665.20x = 4,548,381,874,398.96
  5. Step 5: Solve for x
    x = 4,548,381,874,398.96/3,520,665.20
  6. Step 6: Final answer
    x = 1,291,909.80

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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.