Home / 689,386.50-1,489,455

Finding the Third Proportional to 689,386.50 and 1,489,455

Calculator

Solution

The third proportional to 689,386.50 and 1,489,455 is: 3,218,044.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,386.50 : 1,489,455 = 1,489,455 : x
  2. Step 2: Convert to fraction form
    689,386.50/1,489,455 = 1,489,455/x
  3. Step 3: Cross multiply
    689,386.50x = 1,489,455 × 1,489,455
  4. Step 4: Simplify right side
    689,386.50x = 2,218,476,197,025
  5. Step 5: Solve for x
    x = 2,218,476,197,025/689,386.50
  6. Step 6: Final answer
    x = 3,218,044.16

Related Problems

Find third proportional to 344,693.25 and 744,727.50
Half scale
Find third proportional to 1,378,773 and 2,978,910
Double scale
Find third proportional to 689,389 and 1,489,459
Similar ratio
Find third proportional to 1,034,079.75 and 2,234,182.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.