Home / 290,700-625,920

Finding the Third Proportional to 290,700 and 625,920

Calculator

Solution

The third proportional to 290,700 and 625,920 is: 1,347,698.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,700 : 625,920 = 625,920 : x
  2. Step 2: Convert to fraction form
    290,700/625,920 = 625,920/x
  3. Step 3: Cross multiply
    290,700x = 625,920 × 625,920
  4. Step 4: Simplify right side
    290,700x = 391,775,846,400
  5. Step 5: Solve for x
    x = 391,775,846,400/290,700
  6. Step 6: Final answer
    x = 1,347,698.13

Related Problems

Find third proportional to 145,350 and 312,960
Half scale
Find third proportional to 581,400 and 1,251,840
Double scale
Find third proportional to 290,702 and 625,924
Similar ratio
Find third proportional to 436,050 and 938,880
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.