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Finding the Fourth Proportional to 478,836.56, 716,480.66 and 383,778.44

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Solution

The fourth proportional to 478,836.56, 716,480.66 and 383,778.44 is: 574,245.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,836.56 : 716,480.66 = 383,778.44 : x
  2. Step 2: Convert to fraction form
    478,836.56/716,480.66 = 383,778.44/x
  3. Step 3: Cross multiply
    478,836.56x = 716,480.66 × 383,778.44
  4. Step 4: Simplify right side
    478,836.56x = 274,969,827,362.01
  5. Step 5: Solve for x
    x = 274,969,827,362.01/478,836.56
  6. Step 6: Final answer
    x = 574,245.68

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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.