Home / 769,136.94-1,153,851.21-319,613.76

Finding the Fourth Proportional to 769,136.94, 1,153,851.21 and 319,613.76

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Solution

The fourth proportional to 769,136.94, 1,153,851.21 and 319,613.76 is: 479,481.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,136.94 : 1,153,851.21 = 319,613.76 : x
  2. Step 2: Convert to fraction form
    769,136.94/1,153,851.21 = 319,613.76/x
  3. Step 3: Cross multiply
    769,136.94x = 1,153,851.21 × 319,613.76
  4. Step 4: Simplify right side
    769,136.94x = 368,786,723,708.65
  5. Step 5: Solve for x
    x = 368,786,723,708.65/769,136.94
  6. Step 6: Final answer
    x = 479,481.23

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Double scale
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Similar ratio
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1.5x scale

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.