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Finding the Fourth Proportional to 682,814.50, 942,378.88 and 381,027.94

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Solution

The fourth proportional to 682,814.50, 942,378.88 and 381,027.94 is: 525,871.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,814.50 : 942,378.88 = 381,027.94 : x
  2. Step 2: Convert to fraction form
    682,814.50/942,378.88 = 381,027.94/x
  3. Step 3: Cross multiply
    682,814.50x = 942,378.88 × 381,027.94
  4. Step 4: Simplify right side
    682,814.50x = 359,072,680,037.39
  5. Step 5: Solve for x
    x = 359,072,680,037.39/682,814.50
  6. Step 6: Final answer
    x = 525,871.49

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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.