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Finding the Fourth Proportional to 412,249.70, 618,374.55 and 341,390.90

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Solution

The fourth proportional to 412,249.70, 618,374.55 and 341,390.90 is: 512,086.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,249.70 : 618,374.55 = 341,390.90 : x
  2. Step 2: Convert to fraction form
    412,249.70/618,374.55 = 341,390.90/x
  3. Step 3: Cross multiply
    412,249.70x = 618,374.55 × 341,390.90
  4. Step 4: Simplify right side
    412,249.70x = 211,107,444,161.60
  5. Step 5: Solve for x
    x = 211,107,444,161.60/412,249.70
  6. Step 6: Final answer
    x = 512,086.35

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1.5x scale

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.