Home / 388,316-830,620

Finding the Third Proportional to 388,316 and 830,620

Calculator

Solution

The third proportional to 388,316 and 830,620 is: 1,776,722.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,316 : 830,620 = 830,620 : x
  2. Step 2: Convert to fraction form
    388,316/830,620 = 830,620/x
  3. Step 3: Cross multiply
    388,316x = 830,620 × 830,620
  4. Step 4: Simplify right side
    388,316x = 689,929,584,400
  5. Step 5: Solve for x
    x = 689,929,584,400/388,316
  6. Step 6: Final answer
    x = 1,776,722.01

Related Problems

Find third proportional to 194,158 and 415,310
Half scale
Find third proportional to 776,632 and 1,661,240
Double scale
Find third proportional to 388,318 and 830,624
Similar ratio
Find third proportional to 582,474 and 1,245,930
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.