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Finding the Fourth Proportional to 433,789.48, 648,197.72 and 330,636

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Solution

The fourth proportional to 433,789.48, 648,197.72 and 330,636 is: 494,058.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    433,789.48 : 648,197.72 = 330,636 : x
  2. Step 2: Convert to fraction form
    433,789.48/648,197.72 = 330,636/x
  3. Step 3: Cross multiply
    433,789.48x = 648,197.72 × 330,636
  4. Step 4: Simplify right side
    433,789.48x = 214,317,501,349.92
  5. Step 5: Solve for x
    x = 214,317,501,349.92/433,789.48
  6. Step 6: Final answer
    x = 494,058.78

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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.