Home / 309,259-670,997

Finding the Third Proportional to 309,259 and 670,997

Calculator

Solution

The third proportional to 309,259 and 670,997 is: 1,455,857.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,259 : 670,997 = 670,997 : x
  2. Step 2: Convert to fraction form
    309,259/670,997 = 670,997/x
  3. Step 3: Cross multiply
    309,259x = 670,997 × 670,997
  4. Step 4: Simplify right side
    309,259x = 450,236,974,009
  5. Step 5: Solve for x
    x = 450,236,974,009/309,259
  6. Step 6: Final answer
    x = 1,455,857.30

Related Problems

Find third proportional to 154,629.50 and 335,498.50
Half scale
Find third proportional to 618,518 and 1,341,994
Double scale
Find third proportional to 309,261 and 671,001
Similar ratio
Find third proportional to 463,888.50 and 1,006,495.50
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.