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Finding the Fourth Proportional to 511,745.45, 766,020.78 and 376,961.47

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Solution

The fourth proportional to 511,745.45, 766,020.78 and 376,961.47 is: 564,265.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,745.45 : 766,020.78 = 376,961.47 : x
  2. Step 2: Convert to fraction form
    511,745.45/766,020.78 = 376,961.47/x
  3. Step 3: Cross multiply
    511,745.45x = 766,020.78 × 376,961.47
  4. Step 4: Simplify right side
    511,745.45x = 288,760,317,364.30
  5. Step 5: Solve for x
    x = 288,760,317,364.30/511,745.45
  6. Step 6: Final answer
    x = 564,265.54

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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.