Home / 388,761-580,143

Finding the Third Proportional to 388,761 and 580,143

Calculator

Solution

The third proportional to 388,761 and 580,143 is: 865,739.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,761 : 580,143 = 580,143 : x
  2. Step 2: Convert to fraction form
    388,761/580,143 = 580,143/x
  3. Step 3: Cross multiply
    388,761x = 580,143 × 580,143
  4. Step 4: Simplify right side
    388,761x = 336,565,900,449
  5. Step 5: Solve for x
    x = 336,565,900,449/388,761
  6. Step 6: Final answer
    x = 865,739.88

Related Problems

Find third proportional to 194,380.50 and 290,071.50
Half scale
Find third proportional to 777,522 and 1,160,286
Double scale
Find third proportional to 388,763 and 580,146
Similar ratio
Find third proportional to 583,141.50 and 870,214.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.