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Finding the Fourth Proportional to 619,806.08, 930,207.38 and 320,374.48

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Solution

The fourth proportional to 619,806.08, 930,207.38 and 320,374.48 is: 480,819.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,806.08 : 930,207.38 = 320,374.48 : x
  2. Step 2: Convert to fraction form
    619,806.08/930,207.38 = 320,374.48/x
  3. Step 3: Cross multiply
    619,806.08x = 930,207.38 × 320,374.48
  4. Step 4: Simplify right side
    619,806.08x = 298,014,705,659.66
  5. Step 5: Solve for x
    x = 298,014,705,659.66/619,806.08
  6. Step 6: Final answer
    x = 480,819.27

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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.