Home / 1,328,578.31-1,991,680.67-518,774.33

Finding the Fourth Proportional to 1,328,578.31, 1,991,680.67 and 518,774.33

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Solution

The fourth proportional to 1,328,578.31, 1,991,680.67 and 518,774.33 is: 777,698.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,578.31 : 1,991,680.67 = 518,774.33 : x
  2. Step 2: Convert to fraction form
    1,328,578.31/1,991,680.67 = 518,774.33/x
  3. Step 3: Cross multiply
    1,328,578.31x = 1,991,680.67 × 518,774.33
  4. Step 4: Simplify right side
    1,328,578.31x = 1,033,232,806,613.78
  5. Step 5: Solve for x
    x = 1,033,232,806,613.78/1,328,578.31
  6. Step 6: Final answer
    x = 777,698.08

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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.