Home / 1,285,128.80-1,925,360.40-1,047,183.20

Finding the Fourth Proportional to 1,285,128.80, 1,925,360.40 and 1,047,183.20

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Solution

The fourth proportional to 1,285,128.80, 1,925,360.40 and 1,047,183.20 is: 1,568,873.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285,128.80 : 1,925,360.40 = 1,047,183.20 : x
  2. Step 2: Convert to fraction form
    1,285,128.80/1,925,360.40 = 1,047,183.20/x
  3. Step 3: Cross multiply
    1,285,128.80x = 1,925,360.40 × 1,047,183.20
  4. Step 4: Simplify right side
    1,285,128.80x = 2,016,205,064,825.28
  5. Step 5: Solve for x
    x = 2,016,205,064,825.28/1,285,128.80
  6. Step 6: Final answer
    x = 1,568,873.93

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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.