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Finding the Fourth Proportional to 515,645.39, 773,172.84 and 485,924.06

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Solution

The fourth proportional to 515,645.39, 773,172.84 and 485,924.06 is: 728,607.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,645.39 : 773,172.84 = 485,924.06 : x
  2. Step 2: Convert to fraction form
    515,645.39/773,172.84 = 485,924.06/x
  3. Step 3: Cross multiply
    515,645.39x = 773,172.84 × 485,924.06
  4. Step 4: Simplify right side
    515,645.39x = 375,703,289,249.68
  5. Step 5: Solve for x
    x = 375,703,289,249.68/515,645.39
  6. Step 6: Final answer
    x = 728,607.87

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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.