Home / 288,010-639,947

Finding the Third Proportional to 288,010 and 639,947

Calculator

Solution

The third proportional to 288,010 and 639,947 is: 1,421,937.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,010 : 639,947 = 639,947 : x
  2. Step 2: Convert to fraction form
    288,010/639,947 = 639,947/x
  3. Step 3: Cross multiply
    288,010x = 639,947 × 639,947
  4. Step 4: Simplify right side
    288,010x = 409,532,162,809
  5. Step 5: Solve for x
    x = 409,532,162,809/288,010
  6. Step 6: Final answer
    x = 1,421,937.30

Related Problems

Find third proportional to 144,005 and 319,973.50
Half scale
Find third proportional to 576,020 and 1,279,894
Double scale
Find third proportional to 288,012 and 639,951
Similar ratio
Find third proportional to 432,015 and 959,920.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.