Home / 428,866-630,827

Finding the Third Proportional to 428,866 and 630,827

Calculator

Solution

The third proportional to 428,866 and 630,827 is: 927,895.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,866 : 630,827 = 630,827 : x
  2. Step 2: Convert to fraction form
    428,866/630,827 = 630,827/x
  3. Step 3: Cross multiply
    428,866x = 630,827 × 630,827
  4. Step 4: Simplify right side
    428,866x = 397,942,703,929
  5. Step 5: Solve for x
    x = 397,942,703,929/428,866
  6. Step 6: Final answer
    x = 927,895.20

Related Problems

Find third proportional to 214,433 and 315,413.50
Half scale
Find third proportional to 857,732 and 1,261,654
Double scale
Find third proportional to 428,868 and 630,830
Similar ratio
Find third proportional to 643,299 and 946,240.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.