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Finding the Fourth Proportional to 448,638.46, 619,188.24 and 287,675.26

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Solution

The fourth proportional to 448,638.46, 619,188.24 and 287,675.26 is: 397,034.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,638.46 : 619,188.24 = 287,675.26 : x
  2. Step 2: Convert to fraction form
    448,638.46/619,188.24 = 287,675.26/x
  3. Step 3: Cross multiply
    448,638.46x = 619,188.24 × 287,675.26
  4. Step 4: Simplify right side
    448,638.46x = 178,125,137,930.94
  5. Step 5: Solve for x
    x = 178,125,137,930.94/448,638.46
  6. Step 6: Final answer
    x = 397,034.93

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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.