Home / 481,561.20-664,665.04-320,423.04

Finding the Fourth Proportional to 481,561.20, 664,665.04 and 320,423.04

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Solution

The fourth proportional to 481,561.20, 664,665.04 and 320,423.04 is: 442,257.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,561.20 : 664,665.04 = 320,423.04 : x
  2. Step 2: Convert to fraction form
    481,561.20/664,665.04 = 320,423.04/x
  3. Step 3: Cross multiply
    481,561.20x = 664,665.04 × 320,423.04
  4. Step 4: Simplify right side
    481,561.20x = 212,973,992,698.52
  5. Step 5: Solve for x
    x = 212,973,992,698.52/481,561.20
  6. Step 6: Final answer
    x = 442,257.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.