Home / 297,679-643,104

Finding the Third Proportional to 297,679 and 643,104

Calculator

Solution

The third proportional to 297,679 and 643,104 is: 1,389,358.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,679 : 643,104 = 643,104 : x
  2. Step 2: Convert to fraction form
    297,679/643,104 = 643,104/x
  3. Step 3: Cross multiply
    297,679x = 643,104 × 643,104
  4. Step 4: Simplify right side
    297,679x = 413,582,754,816
  5. Step 5: Solve for x
    x = 413,582,754,816/297,679
  6. Step 6: Final answer
    x = 1,389,358.18

Related Problems

Find third proportional to 148,839.50 and 321,552
Half scale
Find third proportional to 595,358 and 1,286,208
Double scale
Find third proportional to 297,681 and 643,108
Similar ratio
Find third proportional to 446,518.50 and 964,656
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.