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Finding the Fourth Proportional to 879,609.44, 1,213,863.38 and 477,201.44

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Solution

The fourth proportional to 879,609.44, 1,213,863.38 and 477,201.44 is: 658,539.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,609.44 : 1,213,863.38 = 477,201.44 : x
  2. Step 2: Convert to fraction form
    879,609.44/1,213,863.38 = 477,201.44/x
  3. Step 3: Cross multiply
    879,609.44x = 1,213,863.38 × 477,201.44
  4. Step 4: Simplify right side
    879,609.44x = 579,257,352,899.27
  5. Step 5: Solve for x
    x = 579,257,352,899.27/879,609.44
  6. Step 6: Final answer
    x = 658,539.26

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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.