Home / 515,186-788,120

Finding the Third Proportional to 515,186 and 788,120

Calculator

Solution

The third proportional to 515,186 and 788,120 is: 1,205,648.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,186 : 788,120 = 788,120 : x
  2. Step 2: Convert to fraction form
    515,186/788,120 = 788,120/x
  3. Step 3: Cross multiply
    515,186x = 788,120 × 788,120
  4. Step 4: Simplify right side
    515,186x = 621,133,134,400
  5. Step 5: Solve for x
    x = 621,133,134,400/515,186
  6. Step 6: Final answer
    x = 1,205,648.32

Related Problems

Find third proportional to 257,593 and 394,060
Half scale
Find third proportional to 1,030,372 and 1,576,240
Double scale
Find third proportional to 515,188 and 788,123
Similar ratio
Find third proportional to 772,779 and 1,182,180
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.