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Finding the Fourth Proportional to 521,760.60, 714,634.73 and 491,120.73

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Solution

The fourth proportional to 521,760.60, 714,634.73 and 491,120.73 is: 672,668.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,760.60 : 714,634.73 = 491,120.73 : x
  2. Step 2: Convert to fraction form
    521,760.60/714,634.73 = 491,120.73/x
  3. Step 3: Cross multiply
    521,760.60x = 714,634.73 × 491,120.73
  4. Step 4: Simplify right side
    521,760.60x = 350,971,927,825.35
  5. Step 5: Solve for x
    x = 350,971,927,825.35/521,760.60
  6. Step 6: Final answer
    x = 672,668.51

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Half scale
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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 (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.