Home / 721,814.80-1,082,722.20-518,861.20

Finding the Fourth Proportional to 721,814.80, 1,082,722.20 and 518,861.20

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Solution

The fourth proportional to 721,814.80, 1,082,722.20 and 518,861.20 is: 778,291.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,814.80 : 1,082,722.20 = 518,861.20 : x
  2. Step 2: Convert to fraction form
    721,814.80/1,082,722.20 = 518,861.20/x
  3. Step 3: Cross multiply
    721,814.80x = 1,082,722.20 × 518,861.20
  4. Step 4: Simplify right side
    721,814.80x = 561,782,539,958.64
  5. Step 5: Solve for x
    x = 561,782,539,958.64/721,814.80
  6. Step 6: Final answer
    x = 778,291.80

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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.