Home / 317,224-689,744

Finding the Third Proportional to 317,224 and 689,744

Calculator

Solution

The third proportional to 317,224 and 689,744 is: 1,499,718.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,224 : 689,744 = 689,744 : x
  2. Step 2: Convert to fraction form
    317,224/689,744 = 689,744/x
  3. Step 3: Cross multiply
    317,224x = 689,744 × 689,744
  4. Step 4: Simplify right side
    317,224x = 475,746,785,536
  5. Step 5: Solve for x
    x = 475,746,785,536/317,224
  6. Step 6: Final answer
    x = 1,499,718.77

Related Problems

Find third proportional to 158,612 and 344,872
Half scale
Find third proportional to 634,448 and 1,379,488
Double scale
Find third proportional to 317,226 and 689,748
Similar ratio
Find third proportional to 475,836 and 1,034,616
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.