Home / 298,213-621,574

Finding the Third Proportional to 298,213 and 621,574

Calculator

Solution

The third proportional to 298,213 and 621,574 is: 1,295,564.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,213 : 621,574 = 621,574 : x
  2. Step 2: Convert to fraction form
    298,213/621,574 = 621,574/x
  3. Step 3: Cross multiply
    298,213x = 621,574 × 621,574
  4. Step 4: Simplify right side
    298,213x = 386,354,237,476
  5. Step 5: Solve for x
    x = 386,354,237,476/298,213
  6. Step 6: Final answer
    x = 1,295,564.71

Related Problems

Find third proportional to 149,106.50 and 310,787
Half scale
Find third proportional to 596,426 and 1,243,148
Double scale
Find third proportional to 298,215 and 621,578
Similar ratio
Find third proportional to 447,319.50 and 932,361
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.