Home / 490,846.05-677,355.89-321,076.53

Finding the Fourth Proportional to 490,846.05, 677,355.89 and 321,076.53

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Solution

The fourth proportional to 490,846.05, 677,355.89 and 321,076.53 is: 443,077.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,846.05 : 677,355.89 = 321,076.53 : x
  2. Step 2: Convert to fraction form
    490,846.05/677,355.89 = 321,076.53/x
  3. Step 3: Cross multiply
    490,846.05x = 677,355.89 × 321,076.53
  4. Step 4: Simplify right side
    490,846.05x = 217,483,077,130.88
  5. Step 5: Solve for x
    x = 217,483,077,130.88/490,846.05
  6. Step 6: Final answer
    x = 443,077.98

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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.