Home / 865,738.61-1,298,661.46-289,413.76

Finding the Fourth Proportional to 865,738.61, 1,298,661.46 and 289,413.76

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Solution

The fourth proportional to 865,738.61, 1,298,661.46 and 289,413.76 is: 434,138.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,738.61 : 1,298,661.46 = 289,413.76 : x
  2. Step 2: Convert to fraction form
    865,738.61/1,298,661.46 = 289,413.76/x
  3. Step 3: Cross multiply
    865,738.61x = 1,298,661.46 × 289,413.76
  4. Step 4: Simplify right side
    865,738.61x = 375,850,494,570.49
  5. Step 5: Solve for x
    x = 375,850,494,570.49/865,738.61
  6. Step 6: Final answer
    x = 434,138.54

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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.