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Finding the Fourth Proportional to 521,906.20, 782,859.30 and 335,282.20

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Solution

The fourth proportional to 521,906.20, 782,859.30 and 335,282.20 is: 502,923.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,906.20 : 782,859.30 = 335,282.20 : x
  2. Step 2: Convert to fraction form
    521,906.20/782,859.30 = 335,282.20/x
  3. Step 3: Cross multiply
    521,906.20x = 782,859.30 × 335,282.20
  4. Step 4: Simplify right side
    521,906.20x = 262,478,788,394.46
  5. Step 5: Solve for x
    x = 262,478,788,394.46/521,906.20
  6. Step 6: Final answer
    x = 502,923.30

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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.