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Finding the Fourth Proportional to 515,830.21, 773,392.39 and 262,620.73

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Solution

The fourth proportional to 515,830.21, 773,392.39 and 262,620.73 is: 393,751.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,830.21 : 773,392.39 = 262,620.73 : x
  2. Step 2: Convert to fraction form
    515,830.21/773,392.39 = 262,620.73/x
  3. Step 3: Cross multiply
    515,830.21x = 773,392.39 × 262,620.73
  4. Step 4: Simplify right side
    515,830.21x = 203,108,874,038.25
  5. Step 5: Solve for x
    x = 203,108,874,038.25/515,830.21
  6. Step 6: Final answer
    x = 393,751.41

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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.