Home / 1,919,804.36-2,879,391.31-640,421.66

Finding the Fourth Proportional to 1,919,804.36, 2,879,391.31 and 640,421.66

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Solution

The fourth proportional to 1,919,804.36, 2,879,391.31 and 640,421.66 is: 960,527.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919,804.36 : 2,879,391.31 = 640,421.66 : x
  2. Step 2: Convert to fraction form
    1,919,804.36/2,879,391.31 = 640,421.66/x
  3. Step 3: Cross multiply
    1,919,804.36x = 2,879,391.31 × 640,421.66
  4. Step 4: Simplify right side
    1,919,804.36x = 1,844,024,562,539.77
  5. Step 5: Solve for x
    x = 1,844,024,562,539.77/1,919,804.36
  6. Step 6: Final answer
    x = 960,527.33

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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.