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Finding the Fourth Proportional to 483,103.52, 721,402.08 and 394,532.72

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Solution

The fourth proportional to 483,103.52, 721,402.08 and 394,532.72 is: 589,142.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,103.52 : 721,402.08 = 394,532.72 : x
  2. Step 2: Convert to fraction form
    483,103.52/721,402.08 = 394,532.72/x
  3. Step 3: Cross multiply
    483,103.52x = 721,402.08 × 394,532.72
  4. Step 4: Simplify right side
    483,103.52x = 284,616,724,836.06
  5. Step 5: Solve for x
    x = 284,616,724,836.06/483,103.52
  6. Step 6: Final answer
    x = 589,142.31

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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.