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Finding the Fourth Proportional to 555,415.44, 766,473.12 and 300,766.56

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Solution

The fourth proportional to 555,415.44, 766,473.12 and 300,766.56 is: 415,057.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,415.44 : 766,473.12 = 300,766.56 : x
  2. Step 2: Convert to fraction form
    555,415.44/766,473.12 = 300,766.56/x
  3. Step 3: Cross multiply
    555,415.44x = 766,473.12 × 300,766.56
  4. Step 4: Simplify right side
    555,415.44x = 230,529,483,634.87
  5. Step 5: Solve for x
    x = 230,529,483,634.87/555,415.44
  6. Step 6: Final answer
    x = 415,057.75

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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.