Home / 290,468-456,438

Finding the Third Proportional to 290,468 and 456,438

Calculator

Solution

The third proportional to 290,468 and 456,438 is: 717,241.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,468 : 456,438 = 456,438 : x
  2. Step 2: Convert to fraction form
    290,468/456,438 = 456,438/x
  3. Step 3: Cross multiply
    290,468x = 456,438 × 456,438
  4. Step 4: Simplify right side
    290,468x = 208,335,647,844
  5. Step 5: Solve for x
    x = 208,335,647,844/290,468
  6. Step 6: Final answer
    x = 717,241.31

Related Problems

Find third proportional to 145,234 and 228,219
Half scale
Find third proportional to 580,936 and 912,876
Double scale
Find third proportional to 290,470 and 456,441
Similar ratio
Find third proportional to 435,702 and 684,657
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.