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Finding the Fourth Proportional to 511,751.39, 766,365.59 and 321,740.37

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Solution

The fourth proportional to 511,751.39, 766,365.59 and 321,740.37 is: 481,817.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,751.39 : 766,365.59 = 321,740.37 : x
  2. Step 2: Convert to fraction form
    511,751.39/766,365.59 = 321,740.37/x
  3. Step 3: Cross multiply
    511,751.39x = 766,365.59 × 321,740.37
  4. Step 4: Simplify right side
    511,751.39x = 246,570,746,873.17
  5. Step 5: Solve for x
    x = 246,570,746,873.17/511,751.39
  6. Step 6: Final answer
    x = 481,817.45

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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.