Home / 1,211,653.20-1,672,013.19-667,787.32

Finding the Fourth Proportional to 1,211,653.20, 1,672,013.19 and 667,787.32

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Solution

The fourth proportional to 1,211,653.20, 1,672,013.19 and 667,787.32 is: 921,508.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,653.20 : 1,672,013.19 = 667,787.32 : x
  2. Step 2: Convert to fraction form
    1,211,653.20/1,672,013.19 = 667,787.32/x
  3. Step 3: Cross multiply
    1,211,653.20x = 1,672,013.19 × 667,787.32
  4. Step 4: Simplify right side
    1,211,653.20x = 1,116,549,202,974.72
  5. Step 5: Solve for x
    x = 1,116,549,202,974.72/1,211,653.20
  6. Step 6: Final answer
    x = 921,508.90

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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.