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Finding the Fourth Proportional to 644,575.20, 967,008.60 and 378,198.60

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Solution

The fourth proportional to 644,575.20, 967,008.60 and 378,198.60 is: 567,383.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,575.20 : 967,008.60 = 378,198.60 : x
  2. Step 2: Convert to fraction form
    644,575.20/967,008.60 = 378,198.60/x
  3. Step 3: Cross multiply
    644,575.20x = 967,008.60 × 378,198.60
  4. Step 4: Simplify right side
    644,575.20x = 365,721,298,707.96
  5. Step 5: Solve for x
    x = 365,721,298,707.96/644,575.20
  6. Step 6: Final answer
    x = 567,383.45

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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.