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Finding the Fourth Proportional to 683,879.50, 1,024,978.42 and 383,729.49

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Solution

The fourth proportional to 683,879.50, 1,024,978.42 and 383,729.49 is: 575,122.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,879.50 : 1,024,978.42 = 383,729.49 : x
  2. Step 2: Convert to fraction form
    683,879.50/1,024,978.42 = 383,729.49/x
  3. Step 3: Cross multiply
    683,879.50x = 1,024,978.42 × 383,729.49
  4. Step 4: Simplify right side
    683,879.50x = 393,314,445,408.28
  5. Step 5: Solve for x
    x = 393,314,445,408.28/683,879.50
  6. Step 6: Final answer
    x = 575,122.44

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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.