Home / 340,516-515,508

Finding the Third Proportional to 340,516 and 515,508

Calculator

Solution

The third proportional to 340,516 and 515,508 is: 780,428.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,516 : 515,508 = 515,508 : x
  2. Step 2: Convert to fraction form
    340,516/515,508 = 515,508/x
  3. Step 3: Cross multiply
    340,516x = 515,508 × 515,508
  4. Step 4: Simplify right side
    340,516x = 265,748,498,064
  5. Step 5: Solve for x
    x = 265,748,498,064/340,516
  6. Step 6: Final answer
    x = 780,428.81

Related Problems

Find third proportional to 170,258 and 257,754
Half scale
Find third proportional to 681,032 and 1,031,016
Double scale
Find third proportional to 340,518 and 515,511
Similar ratio
Find third proportional to 510,774 and 773,262
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.