Home / 278,546-418,437

Finding the Third Proportional to 278,546 and 418,437

Calculator

Solution

The third proportional to 278,546 and 418,437 is: 628,583.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,546 : 418,437 = 418,437 : x
  2. Step 2: Convert to fraction form
    278,546/418,437 = 418,437/x
  3. Step 3: Cross multiply
    278,546x = 418,437 × 418,437
  4. Step 4: Simplify right side
    278,546x = 175,089,522,969
  5. Step 5: Solve for x
    x = 175,089,522,969/278,546
  6. Step 6: Final answer
    x = 628,583.87

Related Problems

Find third proportional to 139,273 and 209,218.50
Half scale
Find third proportional to 557,092 and 836,874
Double scale
Find third proportional to 278,548 and 418,440
Similar ratio
Find third proportional to 417,819 and 627,655.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.