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Finding the Fourth Proportional to 682,919.63, 942,404.39 and 376,989.44

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Solution

The fourth proportional to 682,919.63, 942,404.39 and 376,989.44 is: 520,231.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,919.63 : 942,404.39 = 376,989.44 : x
  2. Step 2: Convert to fraction form
    682,919.63/942,404.39 = 376,989.44/x
  3. Step 3: Cross multiply
    682,919.63x = 942,404.39 × 376,989.44
  4. Step 4: Simplify right side
    682,919.63x = 355,276,503,710.71
  5. Step 5: Solve for x
    x = 355,276,503,710.71/682,919.63
  6. Step 6: Final answer
    x = 520,231.80

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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.