Home / 321,988-707,408

Finding the Third Proportional to 321,988 and 707,408

Calculator

Solution

The third proportional to 321,988 and 707,408 is: 1,554,176.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,988 : 707,408 = 707,408 : x
  2. Step 2: Convert to fraction form
    321,988/707,408 = 707,408/x
  3. Step 3: Cross multiply
    321,988x = 707,408 × 707,408
  4. Step 4: Simplify right side
    321,988x = 500,426,078,464
  5. Step 5: Solve for x
    x = 500,426,078,464/321,988
  6. Step 6: Final answer
    x = 1,554,176.18

Related Problems

Find third proportional to 160,994 and 353,704
Half scale
Find third proportional to 643,976 and 1,414,816
Double scale
Find third proportional to 321,990 and 707,412
Similar ratio
Find third proportional to 482,982 and 1,061,112
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.