Home / 1,189,081.88-1,783,617.92-430,745.78

Finding the Fourth Proportional to 1,189,081.88, 1,783,617.92 and 430,745.78

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Solution

The fourth proportional to 1,189,081.88, 1,783,617.92 and 430,745.78 is: 646,116.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,081.88 : 1,783,617.92 = 430,745.78 : x
  2. Step 2: Convert to fraction form
    1,189,081.88/1,783,617.92 = 430,745.78/x
  3. Step 3: Cross multiply
    1,189,081.88x = 1,783,617.92 × 430,745.78
  4. Step 4: Simplify right side
    1,189,081.88x = 768,285,892,172.38
  5. Step 5: Solve for x
    x = 768,285,892,172.38/1,189,081.88
  6. Step 6: Final answer
    x = 646,116.89

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1.5x scale

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.