Home / 1,954,129.20-2,931,485.40-691,857.60

Finding the Fourth Proportional to 1,954,129.20, 2,931,485.40 and 691,857.60

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Solution

The fourth proportional to 1,954,129.20, 2,931,485.40 and 691,857.60 is: 1,037,889.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,954,129.20 : 2,931,485.40 = 691,857.60 : x
  2. Step 2: Convert to fraction form
    1,954,129.20/2,931,485.40 = 691,857.60/x
  3. Step 3: Cross multiply
    1,954,129.20x = 2,931,485.40 × 691,857.60
  4. Step 4: Simplify right side
    1,954,129.20x = 2,028,170,453,279.04
  5. Step 5: Solve for x
    x = 2,028,170,453,279.04/1,954,129.20
  6. Step 6: Final answer
    x = 1,037,889.64

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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.