Home / 768,920.91-1,153,412.78-263,829.21

Finding the Fourth Proportional to 768,920.91, 1,153,412.78 and 263,829.21

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Solution

The fourth proportional to 768,920.91, 1,153,412.78 and 263,829.21 is: 395,754.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,920.91 : 1,153,412.78 = 263,829.21 : x
  2. Step 2: Convert to fraction form
    768,920.91/1,153,412.78 = 263,829.21/x
  3. Step 3: Cross multiply
    768,920.91x = 1,153,412.78 × 263,829.21
  4. Step 4: Simplify right side
    768,920.91x = 304,303,981,232.16
  5. Step 5: Solve for x
    x = 304,303,981,232.16/768,920.91
  6. Step 6: Final answer
    x = 395,754.59

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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.