Home / 1,381,912-1,907,515.84-809,136.32

Finding the Fourth Proportional to 1,381,912, 1,907,515.84 and 809,136.32

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Solution

The fourth proportional to 1,381,912, 1,907,515.84 and 809,136.32 is: 1,116,887.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,381,912 : 1,907,515.84 = 809,136.32 : x
  2. Step 2: Convert to fraction form
    1,381,912/1,907,515.84 = 809,136.32/x
  3. Step 3: Cross multiply
    1,381,912x = 1,907,515.84 × 809,136.32
  4. Step 4: Simplify right side
    1,381,912x = 1,543,440,347,119.31
  5. Step 5: Solve for x
    x = 1,543,440,347,119.31/1,381,912
  6. Step 6: Final answer
    x = 1,116,887.58

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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.