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Finding the Fourth Proportional to 1,322,567.91, 1,984,413.56 and 722,828.39

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Solution

The fourth proportional to 1,322,567.91, 1,984,413.56 and 722,828.39 is: 1,084,549.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,322,567.91 : 1,984,413.56 = 722,828.39 : x
  2. Step 2: Convert to fraction form
    1,322,567.91/1,984,413.56 = 722,828.39/x
  3. Step 3: Cross multiply
    1,322,567.91x = 1,984,413.56 × 722,828.39
  4. Step 4: Simplify right side
    1,322,567.91x = 1,434,390,458,668.97
  5. Step 5: Solve for x
    x = 1,434,390,458,668.97/1,322,567.91
  6. Step 6: Final answer
    x = 1,084,549.57

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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.