Home / 1,211,525.25-1,671,916.05-667,680.54

Finding the Fourth Proportional to 1,211,525.25, 1,671,916.05 and 667,680.54

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Solution

The fourth proportional to 1,211,525.25, 1,671,916.05 and 667,680.54 is: 921,405.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,525.25 : 1,671,916.05 = 667,680.54 : x
  2. Step 2: Convert to fraction form
    1,211,525.25/1,671,916.05 = 667,680.54/x
  3. Step 3: Cross multiply
    1,211,525.25x = 1,671,916.05 × 667,680.54
  4. Step 4: Simplify right side
    1,211,525.25x = 1,116,305,811,098.67
  5. Step 5: Solve for x
    x = 1,116,305,811,098.67/1,211,525.25
  6. Step 6: Final answer
    x = 921,405.32

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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.