Home / 1,289,611.84-1,935,912.32-691,740.64

Finding the Fourth Proportional to 1,289,611.84, 1,935,912.32 and 691,740.64

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Solution

The fourth proportional to 1,289,611.84, 1,935,912.32 and 691,740.64 is: 1,038,412.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,611.84 : 1,935,912.32 = 691,740.64 : x
  2. Step 2: Convert to fraction form
    1,289,611.84/1,935,912.32 = 691,740.64/x
  3. Step 3: Cross multiply
    1,289,611.84x = 1,935,912.32 × 691,740.64
  4. Step 4: Simplify right side
    1,289,611.84x = 1,339,149,227,220.68
  5. Step 5: Solve for x
    x = 1,339,149,227,220.68/1,289,611.84
  6. Step 6: Final answer
    x = 1,038,412.63

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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.