Home / 270,280-423,987

Finding the Third Proportional to 270,280 and 423,987

Calculator

Solution

The third proportional to 270,280 and 423,987 is: 665,106.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,280 : 423,987 = 423,987 : x
  2. Step 2: Convert to fraction form
    270,280/423,987 = 423,987/x
  3. Step 3: Cross multiply
    270,280x = 423,987 × 423,987
  4. Step 4: Simplify right side
    270,280x = 179,764,976,169
  5. Step 5: Solve for x
    x = 179,764,976,169/270,280
  6. Step 6: Final answer
    x = 665,106.47

Related Problems

Find third proportional to 135,140 and 211,993.50
Half scale
Find third proportional to 540,560 and 847,974
Double scale
Find third proportional to 270,282 and 423,990
Similar ratio
Find third proportional to 405,420 and 635,980.50
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.