Home / 1,211,442.98-1,671,787.85-667,578.60

Finding the Fourth Proportional to 1,211,442.98, 1,671,787.85 and 667,578.60

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Solution

The fourth proportional to 1,211,442.98, 1,671,787.85 and 667,578.60 is: 921,256.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,442.98 : 1,671,787.85 = 667,578.60 : x
  2. Step 2: Convert to fraction form
    1,211,442.98/1,671,787.85 = 667,578.60/x
  3. Step 3: Cross multiply
    1,211,442.98x = 1,671,787.85 × 667,578.60
  4. Step 4: Simplify right side
    1,211,442.98x = 1,116,049,789,062.12
  5. Step 5: Solve for x
    x = 1,116,049,789,062.12/1,211,442.98
  6. Step 6: Final answer
    x = 921,256.56

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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.