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Finding the Fourth Proportional to 511,995.36, 706,570.56 and 279,435

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Solution

The fourth proportional to 511,995.36, 706,570.56 and 279,435 is: 385,629.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,995.36 : 706,570.56 = 279,435 : x
  2. Step 2: Convert to fraction form
    511,995.36/706,570.56 = 279,435/x
  3. Step 3: Cross multiply
    511,995.36x = 706,570.56 × 279,435
  4. Step 4: Simplify right side
    511,995.36x = 197,440,544,433.60
  5. Step 5: Solve for x
    x = 197,440,544,433.60/511,995.36
  6. Step 6: Final answer
    x = 385,629.56

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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.