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Finding the Fourth Proportional to 505,493.61, 697,567.77 and 276,057.06

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Solution

The fourth proportional to 505,493.61, 697,567.77 and 276,057.06 is: 380,951.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,493.61 : 697,567.77 = 276,057.06 : x
  2. Step 2: Convert to fraction form
    505,493.61/697,567.77 = 276,057.06/x
  3. Step 3: Cross multiply
    505,493.61x = 697,567.77 × 276,057.06
  4. Step 4: Simplify right side
    505,493.61x = 192,568,507,736.96
  5. Step 5: Solve for x
    x = 192,568,507,736.96/505,493.61
  6. Step 6: Final answer
    x = 380,951.42

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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.