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Finding the Fourth Proportional to 478,836.44, 716,480.47 and 383,778.31

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Solution

The fourth proportional to 478,836.44, 716,480.47 and 383,778.31 is: 574,245.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,836.44 : 716,480.47 = 383,778.31 : x
  2. Step 2: Convert to fraction form
    478,836.44/716,480.47 = 383,778.31/x
  3. Step 3: Cross multiply
    478,836.44x = 716,480.47 × 383,778.31
  4. Step 4: Simplify right side
    478,836.44x = 274,969,663,924.61
  5. Step 5: Solve for x
    x = 274,969,663,924.61/478,836.44
  6. Step 6: Final answer
    x = 574,245.49

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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.