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Finding the Fourth Proportional to 455,414.38, 628,525.15 and 378,798.31

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Solution

The fourth proportional to 455,414.38, 628,525.15 and 378,798.31 is: 522,786.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,414.38 : 628,525.15 = 378,798.31 : x
  2. Step 2: Convert to fraction form
    455,414.38/628,525.15 = 378,798.31/x
  3. Step 3: Cross multiply
    455,414.38x = 628,525.15 × 378,798.31
  4. Step 4: Simplify right side
    455,414.38x = 238,084,263,046.44
  5. Step 5: Solve for x
    x = 238,084,263,046.44/455,414.38
  6. Step 6: Final answer
    x = 522,786.00

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1.5x scale

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.