Home / 388,520-843,454

Finding the Third Proportional to 388,520 and 843,454

Calculator

Solution

The third proportional to 388,520 and 843,454 is: 1,831,088.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,520 : 843,454 = 843,454 : x
  2. Step 2: Convert to fraction form
    388,520/843,454 = 843,454/x
  3. Step 3: Cross multiply
    388,520x = 843,454 × 843,454
  4. Step 4: Simplify right side
    388,520x = 711,414,650,116
  5. Step 5: Solve for x
    x = 711,414,650,116/388,520
  6. Step 6: Final answer
    x = 1,831,088.88

Related Problems

Find third proportional to 194,260 and 421,727
Half scale
Find third proportional to 777,040 and 1,686,908
Double scale
Find third proportional to 388,522 and 843,458
Similar ratio
Find third proportional to 582,780 and 1,265,181
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.