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Finding the Fourth Proportional to 647,413.75, 971,514.29 and 273,436.75

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Solution

The fourth proportional to 647,413.75, 971,514.29 and 273,436.75 is: 410,321.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,413.75 : 971,514.29 = 273,436.75 : x
  2. Step 2: Convert to fraction form
    647,413.75/971,514.29 = 273,436.75/x
  3. Step 3: Cross multiply
    647,413.75x = 971,514.29 × 273,436.75
  4. Step 4: Simplify right side
    647,413.75x = 265,647,710,036.16
  5. Step 5: Solve for x
    x = 265,647,710,036.16/647,413.75
  6. Step 6: Final answer
    x = 410,321.39

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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.