Home / 444,915-689,490

Finding the Third Proportional to 444,915 and 689,490

Calculator

Solution

The third proportional to 444,915 and 689,490 is: 1,068,510.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,915 : 689,490 = 689,490 : x
  2. Step 2: Convert to fraction form
    444,915/689,490 = 689,490/x
  3. Step 3: Cross multiply
    444,915x = 689,490 × 689,490
  4. Step 4: Simplify right side
    444,915x = 475,396,460,100
  5. Step 5: Solve for x
    x = 475,396,460,100/444,915
  6. Step 6: Final answer
    x = 1,068,510.75

Related Problems

Find third proportional to 222,457.50 and 344,745
Half scale
Find third proportional to 889,830 and 1,378,980
Double scale
Find third proportional to 444,917 and 689,493
Similar ratio
Find third proportional to 667,372.50 and 1,034,235
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.