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Finding the Fourth Proportional to 547,906.20, 821,859.30 and 252,994.20

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Solution

The fourth proportional to 547,906.20, 821,859.30 and 252,994.20 is: 379,491.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,906.20 : 821,859.30 = 252,994.20 : x
  2. Step 2: Convert to fraction form
    547,906.20/821,859.30 = 252,994.20/x
  3. Step 3: Cross multiply
    547,906.20x = 821,859.30 × 252,994.20
  4. Step 4: Simplify right side
    547,906.20x = 207,925,636,116.06
  5. Step 5: Solve for x
    x = 207,925,636,116.06/547,906.20
  6. Step 6: Final answer
    x = 379,491.30

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