Home / 412,824.20-619,236.30-390,014.60

Finding the Fourth Proportional to 412,824.20, 619,236.30 and 390,014.60

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Solution

The fourth proportional to 412,824.20, 619,236.30 and 390,014.60 is: 585,021.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,824.20 : 619,236.30 = 390,014.60 : x
  2. Step 2: Convert to fraction form
    412,824.20/619,236.30 = 390,014.60/x
  3. Step 3: Cross multiply
    412,824.20x = 619,236.30 × 390,014.60
  4. Step 4: Simplify right side
    412,824.20x = 241,511,197,849.98
  5. Step 5: Solve for x
    x = 241,511,197,849.98/412,824.20
  6. Step 6: Final answer
    x = 585,021.90

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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.