Home / 815,513.94-1,223,413.11-310,118.31

Finding the Fourth Proportional to 815,513.94, 1,223,413.11 and 310,118.31

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Solution

The fourth proportional to 815,513.94, 1,223,413.11 and 310,118.31 is: 465,231.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,513.94 : 1,223,413.11 = 310,118.31 : x
  2. Step 2: Convert to fraction form
    815,513.94/1,223,413.11 = 310,118.31/x
  3. Step 3: Cross multiply
    815,513.94x = 1,223,413.11 × 310,118.31
  4. Step 4: Simplify right side
    815,513.94x = 379,402,806,105.04
  5. Step 5: Solve for x
    x = 379,402,806,105.04/815,513.94
  6. Step 6: Final answer
    x = 465,231.54

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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.