Home / 630.50-1,319.50

Finding the Third Proportional to 630.50 and 1,319.50

Calculator

Solution

The third proportional to 630.50 and 1,319.50 is: 2,761.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.50 : 1,319.50 = 1,319.50 : x
  2. Step 2: Convert to fraction form
    630.50/1,319.50 = 1,319.50/x
  3. Step 3: Cross multiply
    630.50x = 1,319.50 × 1,319.50
  4. Step 4: Simplify right side
    630.50x = 1,741,080.25
  5. Step 5: Solve for x
    x = 1,741,080.25/630.50
  6. Step 6: Final answer
    x = 2,761.43

Related Problems

Find third proportional to 315.25 and 659.75
Half scale
Find third proportional to 1,261 and 2,639
Double scale
Find third proportional to 633 and 1,324
Similar ratio
Find third proportional to 945.75 and 1,979.25
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.