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Finding the Fourth Proportional to 555,205.42, 766,185.92 and 300,556.60

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Solution

The fourth proportional to 555,205.42, 766,185.92 and 300,556.60 is: 414,769.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,205.42 : 766,185.92 = 300,556.60 : x
  2. Step 2: Convert to fraction form
    555,205.42/766,185.92 = 300,556.60/x
  3. Step 3: Cross multiply
    555,205.42x = 766,185.92 × 300,556.60
  4. Step 4: Simplify right side
    555,205.42x = 230,282,235,083.07
  5. Step 5: Solve for x
    x = 230,282,235,083.07/555,205.42
  6. Step 6: Final answer
    x = 414,769.43

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1.5x scale

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.