Home / 256,692-618,402

Finding the Third Proportional to 256,692 and 618,402

Calculator

Solution

The third proportional to 256,692 and 618,402 is: 1,489,805.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,692 : 618,402 = 618,402 : x
  2. Step 2: Convert to fraction form
    256,692/618,402 = 618,402/x
  3. Step 3: Cross multiply
    256,692x = 618,402 × 618,402
  4. Step 4: Simplify right side
    256,692x = 382,421,033,604
  5. Step 5: Solve for x
    x = 382,421,033,604/256,692
  6. Step 6: Final answer
    x = 1,489,805.03

Related Problems

Find third proportional to 128,346 and 309,201
Half scale
Find third proportional to 513,384 and 1,236,804
Double scale
Find third proportional to 256,694 and 618,407
Similar ratio
Find third proportional to 385,038 and 927,603
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.