Home / 390,288-851,976

Finding the Third Proportional to 390,288 and 851,976

Calculator

Solution

The third proportional to 390,288 and 851,976 is: 1,859,814.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,288 : 851,976 = 851,976 : x
  2. Step 2: Convert to fraction form
    390,288/851,976 = 851,976/x
  3. Step 3: Cross multiply
    390,288x = 851,976 × 851,976
  4. Step 4: Simplify right side
    390,288x = 725,863,104,576
  5. Step 5: Solve for x
    x = 725,863,104,576/390,288
  6. Step 6: Final answer
    x = 1,859,814.05

Related Problems

Find third proportional to 195,144 and 425,988
Half scale
Find third proportional to 780,576 and 1,703,952
Double scale
Find third proportional to 390,290 and 851,980
Similar ratio
Find third proportional to 585,432 and 1,277,964
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.