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Finding the Fourth Proportional to 448,579.60, 673,236.60 and 445,080.40

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Solution

The fourth proportional to 448,579.60, 673,236.60 and 445,080.40 is: 667,984.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,579.60 : 673,236.60 = 445,080.40 : x
  2. Step 2: Convert to fraction form
    448,579.60/673,236.60 = 445,080.40/x
  3. Step 3: Cross multiply
    448,579.60x = 673,236.60 × 445,080.40
  4. Step 4: Simplify right side
    448,579.60x = 299,644,415,222.64
  5. Step 5: Solve for x
    x = 299,644,415,222.64/448,579.60
  6. Step 6: Final answer
    x = 667,984.94

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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.