Home / 501.19-780.26

Finding the Third Proportional to 501.19 and 780.26

Calculator

Solution

The third proportional to 501.19 and 780.26 is: 1,214.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    501.19 : 780.26 = 780.26 : x
  2. Step 2: Convert to fraction form
    501.19/780.26 = 780.26/x
  3. Step 3: Cross multiply
    501.19x = 780.26 × 780.26
  4. Step 4: Simplify right side
    501.19x = 608,802.25
  5. Step 5: Solve for x
    x = 608,802.25/501.19
  6. Step 6: Final answer
    x = 1,214.72

Related Problems

Find third proportional to 250.59 and 390.13
Half scale
Find third proportional to 1,002.38 and 1,560.52
Double scale
Find third proportional to 503 and 783
Similar ratio
Find third proportional to 751.78 and 1,170.39
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.