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Finding the Fourth Proportional to 652,003.20, 978,004.80 and 333,138.60

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Solution

The fourth proportional to 652,003.20, 978,004.80 and 333,138.60 is: 499,707.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,003.20 : 978,004.80 = 333,138.60 : x
  2. Step 2: Convert to fraction form
    652,003.20/978,004.80 = 333,138.60/x
  3. Step 3: Cross multiply
    652,003.20x = 978,004.80 × 333,138.60
  4. Step 4: Simplify right side
    652,003.20x = 325,811,149,865.28
  5. Step 5: Solve for x
    x = 325,811,149,865.28/652,003.20
  6. Step 6: Final answer
    x = 499,707.90

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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.