Home / 310,978-653,289

Finding the Third Proportional to 310,978 and 653,289

Calculator

Solution

The third proportional to 310,978 and 653,289 is: 1,372,401.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,978 : 653,289 = 653,289 : x
  2. Step 2: Convert to fraction form
    310,978/653,289 = 653,289/x
  3. Step 3: Cross multiply
    310,978x = 653,289 × 653,289
  4. Step 4: Simplify right side
    310,978x = 426,786,517,521
  5. Step 5: Solve for x
    x = 426,786,517,521/310,978
  6. Step 6: Final answer
    x = 1,372,401.00

Related Problems

Find third proportional to 155,489 and 326,644.50
Half scale
Find third proportional to 621,956 and 1,306,578
Double scale
Find third proportional to 310,980 and 653,293
Similar ratio
Find third proportional to 466,467 and 979,933.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.