Home / 823,413.01-1,235,472.75-318,328.66

Finding the Fourth Proportional to 823,413.01, 1,235,472.75 and 318,328.66

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Solution

The fourth proportional to 823,413.01, 1,235,472.75 and 318,328.66 is: 477,629.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    823,413.01 : 1,235,472.75 = 318,328.66 : x
  2. Step 2: Convert to fraction form
    823,413.01/1,235,472.75 = 318,328.66/x
  3. Step 3: Cross multiply
    823,413.01x = 1,235,472.75 × 318,328.66
  4. Step 4: Simplify right side
    823,413.01x = 393,286,384,974.02
  5. Step 5: Solve for x
    x = 393,286,384,974.02/823,413.01
  6. Step 6: Final answer
    x = 477,629.55

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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.