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Finding the Fourth Proportional to 483,104.52, 721,403.55 and 394,533.72

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Solution

The fourth proportional to 483,104.52, 721,403.55 and 394,533.72 is: 589,143.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,104.52 : 721,403.55 = 394,533.72 : x
  2. Step 2: Convert to fraction form
    483,104.52/721,403.55 = 394,533.72/x
  3. Step 3: Cross multiply
    483,104.52x = 721,403.55 × 394,533.72
  4. Step 4: Simplify right side
    483,104.52x = 284,618,026,202.71
  5. Step 5: Solve for x
    x = 284,618,026,202.71/483,104.52
  6. Step 6: Final answer
    x = 589,143.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.