Home / 1,219,406.39-1,682,709.35-668,012.86

Finding the Fourth Proportional to 1,219,406.39, 1,682,709.35 and 668,012.86

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Solution

The fourth proportional to 1,219,406.39, 1,682,709.35 and 668,012.86 is: 921,818.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219,406.39 : 1,682,709.35 = 668,012.86 : x
  2. Step 2: Convert to fraction form
    1,219,406.39/1,682,709.35 = 668,012.86/x
  3. Step 3: Cross multiply
    1,219,406.39x = 1,682,709.35 × 668,012.86
  4. Step 4: Simplify right side
    1,219,406.39x = 1,124,071,485,442.24
  5. Step 5: Solve for x
    x = 1,124,071,485,442.24/1,219,406.39
  6. Step 6: Final answer
    x = 921,818.60

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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.