Home / 505,581.11-697,697.66-279,221.75

Finding the Fourth Proportional to 505,581.11, 697,697.66 and 279,221.75

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Solution

The fourth proportional to 505,581.11, 697,697.66 and 279,221.75 is: 385,323.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,581.11 : 697,697.66 = 279,221.75 : x
  2. Step 2: Convert to fraction form
    505,581.11/697,697.66 = 279,221.75/x
  3. Step 3: Cross multiply
    505,581.11x = 697,697.66 × 279,221.75
  4. Step 4: Simplify right side
    505,581.11x = 194,812,360,200.00
  5. Step 5: Solve for x
    x = 194,812,360,200.00/505,581.11
  6. Step 6: Final answer
    x = 385,323.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.