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Finding the Fourth Proportional to 619,791.96, 930,186.22 and 320,360.28

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Solution

The fourth proportional to 619,791.96, 930,186.22 and 320,360.28 is: 480,797.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,791.96 : 930,186.22 = 320,360.28 : x
  2. Step 2: Convert to fraction form
    619,791.96/930,186.22 = 320,360.28/x
  3. Step 3: Cross multiply
    619,791.96x = 930,186.22 × 320,360.28
  4. Step 4: Simplify right side
    619,791.96x = 297,994,717,891.34
  5. Step 5: Solve for x
    x = 297,994,717,891.34/619,791.96
  6. Step 6: Final answer
    x = 480,797.97

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1.5x scale

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.