Home / 628,729.92-867,668.20-353,136.24

Finding the Fourth Proportional to 628,729.92, 867,668.20 and 353,136.24

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Solution

The fourth proportional to 628,729.92, 867,668.20 and 353,136.24 is: 487,339.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,729.92 : 867,668.20 = 353,136.24 : x
  2. Step 2: Convert to fraction form
    628,729.92/867,668.20 = 353,136.24/x
  3. Step 3: Cross multiply
    628,729.92x = 867,668.20 × 353,136.24
  4. Step 4: Simplify right side
    628,729.92x = 306,405,085,715.57
  5. Step 5: Solve for x
    x = 306,405,085,715.57/628,729.92
  6. Step 6: Final answer
    x = 487,339.76

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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.