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Finding the Fourth Proportional to 671,804.36, 926,929 and 381,351.32

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Solution

The fourth proportional to 671,804.36, 926,929 and 381,351.32 is: 526,173.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,804.36 : 926,929 = 381,351.32 : x
  2. Step 2: Convert to fraction form
    671,804.36/926,929 = 381,351.32/x
  3. Step 3: Cross multiply
    671,804.36x = 926,929 × 381,351.32
  4. Step 4: Simplify right side
    671,804.36x = 353,485,597,696.28
  5. Step 5: Solve for x
    x = 353,485,597,696.28/671,804.36
  6. Step 6: Final answer
    x = 526,173.42

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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.