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Finding the Fourth Proportional to 984,800.20, 1,477,248.90 and 512,408.20

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Solution

The fourth proportional to 984,800.20, 1,477,248.90 and 512,408.20 is: 768,637.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    984,800.20 : 1,477,248.90 = 512,408.20 : x
  2. Step 2: Convert to fraction form
    984,800.20/1,477,248.90 = 512,408.20/x
  3. Step 3: Cross multiply
    984,800.20x = 1,477,248.90 × 512,408.20
  4. Step 4: Simplify right side
    984,800.20x = 756,954,449,800.98
  5. Step 5: Solve for x
    x = 756,954,449,800.98/984,800.20
  6. Step 6: Final answer
    x = 768,637.59

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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.