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Finding the Fourth Proportional to 511,989.66, 767,924.52 and 321,888.79

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Solution

The fourth proportional to 511,989.66, 767,924.52 and 321,888.79 is: 482,795.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,989.66 : 767,924.52 = 321,888.79 : x
  2. Step 2: Convert to fraction form
    511,989.66/767,924.52 = 321,888.79/x
  3. Step 3: Cross multiply
    511,989.66x = 767,924.52 × 321,888.79
  4. Step 4: Simplify right side
    511,989.66x = 247,186,294,554.13
  5. Step 5: Solve for x
    x = 247,186,294,554.13/511,989.66
  6. Step 6: Final answer
    x = 482,795.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.