Home / 1,191,043.42-1,643,611.04-667,719.36

Finding the Fourth Proportional to 1,191,043.42, 1,643,611.04 and 667,719.36

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Solution

The fourth proportional to 1,191,043.42, 1,643,611.04 and 667,719.36 is: 921,436.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191,043.42 : 1,643,611.04 = 667,719.36 : x
  2. Step 2: Convert to fraction form
    1,191,043.42/1,643,611.04 = 667,719.36/x
  3. Step 3: Cross multiply
    1,191,043.42x = 1,643,611.04 × 667,719.36
  4. Step 4: Simplify right side
    1,191,043.42x = 1,097,470,911,717.73
  5. Step 5: Solve for x
    x = 1,097,470,911,717.73/1,191,043.42
  6. Step 6: Final answer
    x = 921,436.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.