Home / 321,440-613,708

Finding the Third Proportional to 321,440 and 613,708

Calculator

Solution

The third proportional to 321,440 and 613,708 is: 1,171,719.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,440 : 613,708 = 613,708 : x
  2. Step 2: Convert to fraction form
    321,440/613,708 = 613,708/x
  3. Step 3: Cross multiply
    321,440x = 613,708 × 613,708
  4. Step 4: Simplify right side
    321,440x = 376,637,509,264
  5. Step 5: Solve for x
    x = 376,637,509,264/321,440
  6. Step 6: Final answer
    x = 1,171,719.48

Related Problems

Find third proportional to 160,720 and 306,854
Half scale
Find third proportional to 642,880 and 1,227,416
Double scale
Find third proportional to 321,442 and 613,712
Similar ratio
Find third proportional to 482,160 and 920,562
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.91) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.