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Finding the Fourth Proportional to 555,003.22, 765,904.44 and 300,354.46

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Solution

The fourth proportional to 555,003.22, 765,904.44 and 300,354.46 is: 414,489.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,003.22 : 765,904.44 = 300,354.46 : x
  2. Step 2: Convert to fraction form
    555,003.22/765,904.44 = 300,354.46/x
  3. Step 3: Cross multiply
    555,003.22x = 765,904.44 × 300,354.46
  4. Step 4: Simplify right side
    555,003.22x = 230,042,814,487.80
  5. Step 5: Solve for x
    x = 230,042,814,487.80/555,003.22
  6. Step 6: Final answer
    x = 414,489.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.