Home / 511,351.48-705,707.04-281,929.78

Finding the Fourth Proportional to 511,351.48, 705,707.04 and 281,929.78

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Solution

The fourth proportional to 511,351.48, 705,707.04 and 281,929.78 is: 389,086.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,351.48 : 705,707.04 = 281,929.78 : x
  2. Step 2: Convert to fraction form
    511,351.48/705,707.04 = 281,929.78/x
  3. Step 3: Cross multiply
    511,351.48x = 705,707.04 × 281,929.78
  4. Step 4: Simplify right side
    511,351.48x = 198,959,830,531.65
  5. Step 5: Solve for x
    x = 198,959,830,531.65/511,351.48
  6. Step 6: Final answer
    x = 389,086.25

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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.