Home / 258,078-539,808

Finding the Third Proportional to 258,078 and 539,808

Calculator

Solution

The third proportional to 258,078 and 539,808 is: 1,129,087.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,078 : 539,808 = 539,808 : x
  2. Step 2: Convert to fraction form
    258,078/539,808 = 539,808/x
  3. Step 3: Cross multiply
    258,078x = 539,808 × 539,808
  4. Step 4: Simplify right side
    258,078x = 291,392,676,864
  5. Step 5: Solve for x
    x = 291,392,676,864/258,078
  6. Step 6: Final answer
    x = 1,129,087.63

Related Problems

Find third proportional to 129,039 and 269,904
Half scale
Find third proportional to 516,156 and 1,079,616
Double scale
Find third proportional to 258,080 and 539,812
Similar ratio
Find third proportional to 387,117 and 809,712
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.