Home / 1,392,711.42-2,089,067.16-919,286.04

Finding the Fourth Proportional to 1,392,711.42, 2,089,067.16 and 919,286.04

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Solution

The fourth proportional to 1,392,711.42, 2,089,067.16 and 919,286.04 is: 1,378,929.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392,711.42 : 2,089,067.16 = 919,286.04 : x
  2. Step 2: Convert to fraction form
    1,392,711.42/2,089,067.16 = 919,286.04/x
  3. Step 3: Cross multiply
    1,392,711.42x = 2,089,067.16 × 919,286.04
  4. Step 4: Simplify right side
    1,392,711.42x = 1,920,450,276,810.45
  5. Step 5: Solve for x
    x = 1,920,450,276,810.45/1,392,711.42
  6. Step 6: Final answer
    x = 1,378,929.08

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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.