Home / 315,854-690,759

Finding the Third Proportional to 315,854 and 690,759

Calculator

Solution

The third proportional to 315,854 and 690,759 is: 1,510,659.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,854 : 690,759 = 690,759 : x
  2. Step 2: Convert to fraction form
    315,854/690,759 = 690,759/x
  3. Step 3: Cross multiply
    315,854x = 690,759 × 690,759
  4. Step 4: Simplify right side
    315,854x = 477,147,996,081
  5. Step 5: Solve for x
    x = 477,147,996,081/315,854
  6. Step 6: Final answer
    x = 1,510,659.98

Related Problems

Find third proportional to 157,927 and 345,379.50
Half scale
Find third proportional to 631,708 and 1,381,518
Double scale
Find third proportional to 315,856 and 690,763
Similar ratio
Find third proportional to 473,781 and 1,036,138.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.