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Finding the Fourth Proportional to 566,815.60, 850,223.40 and 378,809.20

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Solution

The fourth proportional to 566,815.60, 850,223.40 and 378,809.20 is: 568,213.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,815.60 : 850,223.40 = 378,809.20 : x
  2. Step 2: Convert to fraction form
    566,815.60/850,223.40 = 378,809.20/x
  3. Step 3: Cross multiply
    566,815.60x = 850,223.40 × 378,809.20
  4. Step 4: Simplify right side
    566,815.60x = 322,072,445,975.28
  5. Step 5: Solve for x
    x = 322,072,445,975.28/566,815.60
  6. Step 6: Final answer
    x = 568,213.80

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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.