Home / 839,880.78-1,259,075.14-327,427.80

Finding the Fourth Proportional to 839,880.78, 1,259,075.14 and 327,427.80

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Solution

The fourth proportional to 839,880.78, 1,259,075.14 and 327,427.80 is: 490,850.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,880.78 : 1,259,075.14 = 327,427.80 : x
  2. Step 2: Convert to fraction form
    839,880.78/1,259,075.14 = 327,427.80/x
  3. Step 3: Cross multiply
    839,880.78x = 1,259,075.14 × 327,427.80
  4. Step 4: Simplify right side
    839,880.78x = 412,256,203,124.89
  5. Step 5: Solve for x
    x = 412,256,203,124.89/839,880.78
  6. Step 6: Final answer
    x = 490,850.86

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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.