Home / 545,768.20-819,138.30-320,847.40

Finding the Fourth Proportional to 545,768.20, 819,138.30 and 320,847.40

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Solution

The fourth proportional to 545,768.20, 819,138.30 and 320,847.40 is: 481,556.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,768.20 : 819,138.30 = 320,847.40 : x
  2. Step 2: Convert to fraction form
    545,768.20/819,138.30 = 320,847.40/x
  3. Step 3: Cross multiply
    545,768.20x = 819,138.30 × 320,847.40
  4. Step 4: Simplify right side
    545,768.20x = 262,818,393,795.42
  5. Step 5: Solve for x
    x = 262,818,393,795.42/545,768.20
  6. Step 6: Final answer
    x = 481,556.81

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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.