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Finding the Fourth Proportional to 693,804.36, 957,745.20 and 421,959.52

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Solution

The fourth proportional to 693,804.36, 957,745.20 and 421,959.52 is: 582,483.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,804.36 : 957,745.20 = 421,959.52 : x
  2. Step 2: Convert to fraction form
    693,804.36/957,745.20 = 421,959.52/x
  3. Step 3: Cross multiply
    693,804.36x = 957,745.20 × 421,959.52
  4. Step 4: Simplify right side
    693,804.36x = 404,129,704,874.30
  5. Step 5: Solve for x
    x = 404,129,704,874.30/693,804.36
  6. Step 6: Final answer
    x = 582,483.66

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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.