Home / 315,560-686,416

Finding the Third Proportional to 315,560 and 686,416

Calculator

Solution

The third proportional to 315,560 and 686,416 is: 1,493,113.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,560 : 686,416 = 686,416 : x
  2. Step 2: Convert to fraction form
    315,560/686,416 = 686,416/x
  3. Step 3: Cross multiply
    315,560x = 686,416 × 686,416
  4. Step 4: Simplify right side
    315,560x = 471,166,925,056
  5. Step 5: Solve for x
    x = 471,166,925,056/315,560
  6. Step 6: Final answer
    x = 1,493,113.59

Related Problems

Find third proportional to 157,780 and 343,208
Half scale
Find third proportional to 631,120 and 1,372,832
Double scale
Find third proportional to 315,562 and 686,420
Similar ratio
Find third proportional to 473,340 and 1,029,624
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.