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Finding the Fourth Proportional to 603,279.70, 904,919.55 and 445,815.70

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Solution

The fourth proportional to 603,279.70, 904,919.55 and 445,815.70 is: 668,723.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,279.70 : 904,919.55 = 445,815.70 : x
  2. Step 2: Convert to fraction form
    603,279.70/904,919.55 = 445,815.70/x
  3. Step 3: Cross multiply
    603,279.70x = 904,919.55 × 445,815.70
  4. Step 4: Simplify right side
    603,279.70x = 403,427,342,626.94
  5. Step 5: Solve for x
    x = 403,427,342,626.94/603,279.70
  6. Step 6: Final answer
    x = 668,723.55

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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.