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Finding the Fourth Proportional to 630,940.60, 946,410.90 and 378,998.20

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Solution

The fourth proportional to 630,940.60, 946,410.90 and 378,998.20 is: 568,497.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,940.60 : 946,410.90 = 378,998.20 : x
  2. Step 2: Convert to fraction form
    630,940.60/946,410.90 = 378,998.20/x
  3. Step 3: Cross multiply
    630,940.60x = 946,410.90 × 378,998.20
  4. Step 4: Simplify right side
    630,940.60x = 358,688,027,560.38
  5. Step 5: Solve for x
    x = 358,688,027,560.38/630,940.60
  6. Step 6: Final answer
    x = 568,497.30

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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.