Home / 1,382,520.18-1,907,440.74-1,091,211.78

Finding the Fourth Proportional to 1,382,520.18, 1,907,440.74 and 1,091,211.78

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Solution

The fourth proportional to 1,382,520.18, 1,907,440.74 and 1,091,211.78 is: 1,505,527.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,382,520.18 : 1,907,440.74 = 1,091,211.78 : x
  2. Step 2: Convert to fraction form
    1,382,520.18/1,907,440.74 = 1,091,211.78/x
  3. Step 3: Cross multiply
    1,382,520.18x = 1,907,440.74 × 1,091,211.78
  4. Step 4: Simplify right side
    1,382,520.18x = 2,081,421,805,139.92
  5. Step 5: Solve for x
    x = 2,081,421,805,139.92/1,382,520.18
  6. Step 6: Final answer
    x = 1,505,527.25

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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.