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Finding the Fourth Proportional to 682,438.70, 941,768.67 and 376,515.07

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Solution

The fourth proportional to 682,438.70, 941,768.67 and 376,515.07 is: 519,592.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,438.70 : 941,768.67 = 376,515.07 : x
  2. Step 2: Convert to fraction form
    682,438.70/941,768.67 = 376,515.07/x
  3. Step 3: Cross multiply
    682,438.70x = 941,768.67 × 376,515.07
  4. Step 4: Simplify right side
    682,438.70x = 354,590,095,766.37
  5. Step 5: Solve for x
    x = 354,590,095,766.37/682,438.70
  6. Step 6: Final answer
    x = 519,592.59

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Double scale
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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.