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Finding the Fourth Proportional to 511,464.44, 705,820.97 and 285,109.94

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Solution

The fourth proportional to 511,464.44, 705,820.97 and 285,109.94 is: 393,451.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,464.44 : 705,820.97 = 285,109.94 : x
  2. Step 2: Convert to fraction form
    511,464.44/705,820.97 = 285,109.94/x
  3. Step 3: Cross multiply
    511,464.44x = 705,820.97 × 285,109.94
  4. Step 4: Simplify right side
    511,464.44x = 201,236,572,642.89
  5. Step 5: Solve for x
    x = 201,236,572,642.89/511,464.44
  6. Step 6: Final answer
    x = 393,451.74

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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.