Home / 258,979-565,990

Finding the Third Proportional to 258,979 and 565,990

Calculator

Solution

The third proportional to 258,979 and 565,990 is: 1,236,952.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,979 : 565,990 = 565,990 : x
  2. Step 2: Convert to fraction form
    258,979/565,990 = 565,990/x
  3. Step 3: Cross multiply
    258,979x = 565,990 × 565,990
  4. Step 4: Simplify right side
    258,979x = 320,344,680,100
  5. Step 5: Solve for x
    x = 320,344,680,100/258,979
  6. Step 6: Final answer
    x = 1,236,952.34

Related Problems

Find third proportional to 129,489.50 and 282,995
Half scale
Find third proportional to 517,958 and 1,131,980
Double scale
Find third proportional to 258,981 and 565,994
Similar ratio
Find third proportional to 388,468.50 and 848,985
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.