Home / 291,486-636,974

Finding the Third Proportional to 291,486 and 636,974

Calculator

Solution

The third proportional to 291,486 and 636,974 is: 1,391,956.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,486 : 636,974 = 636,974 : x
  2. Step 2: Convert to fraction form
    291,486/636,974 = 636,974/x
  3. Step 3: Cross multiply
    291,486x = 636,974 × 636,974
  4. Step 4: Simplify right side
    291,486x = 405,735,876,676
  5. Step 5: Solve for x
    x = 405,735,876,676/291,486
  6. Step 6: Final answer
    x = 1,391,956.65

Related Problems

Find third proportional to 145,743 and 318,487
Half scale
Find third proportional to 582,972 and 1,273,948
Double scale
Find third proportional to 291,488 and 636,978
Similar ratio
Find third proportional to 437,229 and 955,461
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.