Home / 1,189,012.52-1,783,704.69-390,112.36

Finding the Fourth Proportional to 1,189,012.52, 1,783,704.69 and 390,112.36

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Solution

The fourth proportional to 1,189,012.52, 1,783,704.69 and 390,112.36 is: 585,229.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,012.52 : 1,783,704.69 = 390,112.36 : x
  2. Step 2: Convert to fraction form
    1,189,012.52/1,783,704.69 = 390,112.36/x
  3. Step 3: Cross multiply
    1,189,012.52x = 1,783,704.69 × 390,112.36
  4. Step 4: Simplify right side
    1,189,012.52x = 695,845,246,158.97
  5. Step 5: Solve for x
    x = 695,845,246,158.97/1,189,012.52
  6. Step 6: Final answer
    x = 585,229.54

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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.