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Finding the Fourth Proportional to 496,521.28, 685,197.48 and 281,702.80

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Solution

The fourth proportional to 496,521.28, 685,197.48 and 281,702.80 is: 388,748.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,521.28 : 685,197.48 = 281,702.80 : x
  2. Step 2: Convert to fraction form
    496,521.28/685,197.48 = 281,702.80/x
  3. Step 3: Cross multiply
    496,521.28x = 685,197.48 × 281,702.80
  4. Step 4: Simplify right side
    496,521.28x = 193,022,048,668.94
  5. Step 5: Solve for x
    x = 193,022,048,668.94/496,521.28
  6. Step 6: Final answer
    x = 388,748.79

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1.5x scale

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.