Home / 436,128-691,776

Finding the Third Proportional to 436,128 and 691,776

Calculator

Solution

The third proportional to 436,128 and 691,776 is: 1,097,278.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,128 : 691,776 = 691,776 : x
  2. Step 2: Convert to fraction form
    436,128/691,776 = 691,776/x
  3. Step 3: Cross multiply
    436,128x = 691,776 × 691,776
  4. Step 4: Simplify right side
    436,128x = 478,554,034,176
  5. Step 5: Solve for x
    x = 478,554,034,176/436,128
  6. Step 6: Final answer
    x = 1,097,278.86

Related Problems

Find third proportional to 218,064 and 345,888
Half scale
Find third proportional to 872,256 and 1,383,552
Double scale
Find third proportional to 436,130 and 691,779
Similar ratio
Find third proportional to 654,192 and 1,037,664
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.