Home / 743,136.21-1,114,352.73-287,940.51

Finding the Fourth Proportional to 743,136.21, 1,114,352.73 and 287,940.51

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Solution

The fourth proportional to 743,136.21, 1,114,352.73 and 287,940.51 is: 431,774.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,136.21 : 1,114,352.73 = 287,940.51 : x
  2. Step 2: Convert to fraction form
    743,136.21/1,114,352.73 = 287,940.51/x
  3. Step 3: Cross multiply
    743,136.21x = 1,114,352.73 × 287,940.51
  4. Step 4: Simplify right side
    743,136.21x = 320,867,293,396.09
  5. Step 5: Solve for x
    x = 320,867,293,396.09/743,136.21
  6. Step 6: Final answer
    x = 431,774.54

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1.5x scale

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.