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Finding the Fourth Proportional to 474,777.69, 655,014.35 and 311,524.31

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Solution

The fourth proportional to 474,777.69, 655,014.35 and 311,524.31 is: 429,786.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,777.69 : 655,014.35 = 311,524.31 : x
  2. Step 2: Convert to fraction form
    474,777.69/655,014.35 = 311,524.31/x
  3. Step 3: Cross multiply
    474,777.69x = 655,014.35 × 311,524.31
  4. Step 4: Simplify right side
    474,777.69x = 204,052,894,087.87
  5. Step 5: Solve for x
    x = 204,052,894,087.87/474,777.69
  6. Step 6: Final answer
    x = 429,786.19

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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.