Home / 505,320.72-697,324.32-278,961.36

Finding the Fourth Proportional to 505,320.72, 697,324.32 and 278,961.36

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Solution

The fourth proportional to 505,320.72, 697,324.32 and 278,961.36 is: 384,956.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,320.72 : 697,324.32 = 278,961.36 : x
  2. Step 2: Convert to fraction form
    505,320.72/697,324.32 = 278,961.36/x
  3. Step 3: Cross multiply
    505,320.72x = 697,324.32 × 278,961.36
  4. Step 4: Simplify right side
    505,320.72x = 194,526,540,668.28
  5. Step 5: Solve for x
    x = 194,526,540,668.28/505,320.72
  6. Step 6: Final answer
    x = 384,956.59

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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.