Home / 493,103.80-680,502.54-289,126.36

Finding the Fourth Proportional to 493,103.80, 680,502.54 and 289,126.36

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Solution

The fourth proportional to 493,103.80, 680,502.54 and 289,126.36 is: 399,005.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,103.80 : 680,502.54 = 289,126.36 : x
  2. Step 2: Convert to fraction form
    493,103.80/680,502.54 = 289,126.36/x
  3. Step 3: Cross multiply
    493,103.80x = 680,502.54 × 289,126.36
  4. Step 4: Simplify right side
    493,103.80x = 196,751,222,360.95
  5. Step 5: Solve for x
    x = 196,751,222,360.95/493,103.80
  6. Step 6: Final answer
    x = 399,005.69

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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.