Home / 2,187,320.72-3,280,961.40-691,413.20

Finding the Fourth Proportional to 2,187,320.72, 3,280,961.40 and 691,413.20

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Solution

The fourth proportional to 2,187,320.72, 3,280,961.40 and 691,413.20 is: 1,037,113.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187,320.72 : 3,280,961.40 = 691,413.20 : x
  2. Step 2: Convert to fraction form
    2,187,320.72/3,280,961.40 = 691,413.20/x
  3. Step 3: Cross multiply
    2,187,320.72x = 3,280,961.40 × 691,413.20
  4. Step 4: Simplify right side
    2,187,320.72x = 2,268,500,020,650.48
  5. Step 5: Solve for x
    x = 2,268,500,020,650.48/2,187,320.72
  6. Step 6: Final answer
    x = 1,037,113.58

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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.