Home / 911,784.52-1,258,287.78-503,912.80

Finding the Fourth Proportional to 911,784.52, 1,258,287.78 and 503,912.80

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Solution

The fourth proportional to 911,784.52, 1,258,287.78 and 503,912.80 is: 695,413.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,784.52 : 1,258,287.78 = 503,912.80 : x
  2. Step 2: Convert to fraction form
    911,784.52/1,258,287.78 = 503,912.80/x
  3. Step 3: Cross multiply
    911,784.52x = 1,258,287.78 × 503,912.80
  4. Step 4: Simplify right side
    911,784.52x = 634,067,318,425.58
  5. Step 5: Solve for x
    x = 634,067,318,425.58/911,784.52
  6. Step 6: Final answer
    x = 695,413.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.