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Finding the Fourth Proportional to 397,076.80, 595,615.20 and 378,644.80

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Solution

The fourth proportional to 397,076.80, 595,615.20 and 378,644.80 is: 567,967.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,076.80 : 595,615.20 = 378,644.80 : x
  2. Step 2: Convert to fraction form
    397,076.80/595,615.20 = 378,644.80/x
  3. Step 3: Cross multiply
    397,076.80x = 595,615.20 × 378,644.80
  4. Step 4: Simplify right side
    397,076.80x = 225,526,598,280.96
  5. Step 5: Solve for x
    x = 225,526,598,280.96/397,076.80
  6. Step 6: Final answer
    x = 567,967.20

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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.