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Finding the Fourth Proportional to 589,851.44, 813,995.40 and 321,579.44

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Solution

The fourth proportional to 589,851.44, 813,995.40 and 321,579.44 is: 443,779.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    589,851.44 : 813,995.40 = 321,579.44 : x
  2. Step 2: Convert to fraction form
    589,851.44/813,995.40 = 321,579.44/x
  3. Step 3: Cross multiply
    589,851.44x = 813,995.40 × 321,579.44
  4. Step 4: Simplify right side
    589,851.44x = 261,764,184,894.58
  5. Step 5: Solve for x
    x = 261,764,184,894.58/589,851.44
  6. Step 6: Final answer
    x = 443,779.85

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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.