Home / 387,245-843,387

Finding the Third Proportional to 387,245 and 843,387

Calculator

Solution

The third proportional to 387,245 and 843,387 is: 1,836,825.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,245 : 843,387 = 843,387 : x
  2. Step 2: Convert to fraction form
    387,245/843,387 = 843,387/x
  3. Step 3: Cross multiply
    387,245x = 843,387 × 843,387
  4. Step 4: Simplify right side
    387,245x = 711,301,631,769
  5. Step 5: Solve for x
    x = 711,301,631,769/387,245
  6. Step 6: Final answer
    x = 1,836,825.86

Related Problems

Find third proportional to 193,622.50 and 421,693.50
Half scale
Find third proportional to 774,490 and 1,686,774
Double scale
Find third proportional to 387,247 and 843,391
Similar ratio
Find third proportional to 580,867.50 and 1,265,080.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.