Home / 511,397.28-705,731.52-285,057.12

Finding the Fourth Proportional to 511,397.28, 705,731.52 and 285,057.12

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Solution

The fourth proportional to 511,397.28, 705,731.52 and 285,057.12 is: 393,380.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,397.28 : 705,731.52 = 285,057.12 : x
  2. Step 2: Convert to fraction form
    511,397.28/705,731.52 = 285,057.12/x
  3. Step 3: Cross multiply
    511,397.28x = 705,731.52 × 285,057.12
  4. Step 4: Simplify right side
    511,397.28x = 201,173,794,584.42
  5. Step 5: Solve for x
    x = 201,173,794,584.42/511,397.28
  6. Step 6: Final answer
    x = 393,380.65

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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.