Home / 398,972-865,764

Finding the Third Proportional to 398,972 and 865,764

Calculator

Solution

The third proportional to 398,972 and 865,764 is: 1,878,696.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,972 : 865,764 = 865,764 : x
  2. Step 2: Convert to fraction form
    398,972/865,764 = 865,764/x
  3. Step 3: Cross multiply
    398,972x = 865,764 × 865,764
  4. Step 4: Simplify right side
    398,972x = 749,547,303,696
  5. Step 5: Solve for x
    x = 749,547,303,696/398,972
  6. Step 6: Final answer
    x = 1,878,696.51

Related Problems

Find third proportional to 199,486 and 432,882
Half scale
Find third proportional to 797,944 and 1,731,528
Double scale
Find third proportional to 398,974 and 865,768
Similar ratio
Find third proportional to 598,458 and 1,298,646
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.