Home / 1,927,145.30-2,887,715.55-728,413.70

Finding the Fourth Proportional to 1,927,145.30, 2,887,715.55 and 728,413.70

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Solution

The fourth proportional to 1,927,145.30, 2,887,715.55 and 728,413.70 is: 1,091,485.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,927,145.30 : 2,887,715.55 = 728,413.70 : x
  2. Step 2: Convert to fraction form
    1,927,145.30/2,887,715.55 = 728,413.70/x
  3. Step 3: Cross multiply
    1,927,145.30x = 2,887,715.55 × 728,413.70
  4. Step 4: Simplify right side
    1,927,145.30x = 2,103,451,568,323.03
  5. Step 5: Solve for x
    x = 2,103,451,568,323.03/1,927,145.30
  6. Step 6: Final answer
    x = 1,091,485.72

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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.