Home / 890,930.80-1,336,396.20-838,442.80

Finding the Fourth Proportional to 890,930.80, 1,336,396.20 and 838,442.80

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Solution

The fourth proportional to 890,930.80, 1,336,396.20 and 838,442.80 is: 1,257,664.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,930.80 : 1,336,396.20 = 838,442.80 : x
  2. Step 2: Convert to fraction form
    890,930.80/1,336,396.20 = 838,442.80/x
  3. Step 3: Cross multiply
    890,930.80x = 1,336,396.20 × 838,442.80
  4. Step 4: Simplify right side
    890,930.80x = 1,120,491,771,837.36
  5. Step 5: Solve for x
    x = 1,120,491,771,837.36/890,930.80
  6. Step 6: Final answer
    x = 1,257,664.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.