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Finding the Fourth Proportional to 984,891.70, 1,477,337.55 and 512,499.70

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Solution

The fourth proportional to 984,891.70, 1,477,337.55 and 512,499.70 is: 768,749.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    984,891.70 : 1,477,337.55 = 512,499.70 : x
  2. Step 2: Convert to fraction form
    984,891.70/1,477,337.55 = 512,499.70/x
  3. Step 3: Cross multiply
    984,891.70x = 1,477,337.55 × 512,499.70
  4. Step 4: Simplify right side
    984,891.70x = 757,135,051,173.74
  5. Step 5: Solve for x
    x = 757,135,051,173.74/984,891.70
  6. Step 6: Final answer
    x = 768,749.55

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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.