Home / 1,993,879.40-2,991,207.90-856,639.40

Finding the Fourth Proportional to 1,993,879.40, 2,991,207.90 and 856,639.40

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Solution

The fourth proportional to 1,993,879.40, 2,991,207.90 and 856,639.40 is: 1,285,126.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,993,879.40 : 2,991,207.90 = 856,639.40 : x
  2. Step 2: Convert to fraction form
    1,993,879.40/2,991,207.90 = 856,639.40/x
  3. Step 3: Cross multiply
    1,993,879.40x = 2,991,207.90 × 856,639.40
  4. Step 4: Simplify right side
    1,993,879.40x = 2,562,386,540,731.26
  5. Step 5: Solve for x
    x = 2,562,386,540,731.26/1,993,879.40
  6. Step 6: Final answer
    x = 1,285,126.14

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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.