Home / 290,772-616,720

Finding the Third Proportional to 290,772 and 616,720

Calculator

Solution

The third proportional to 290,772 and 616,720 is: 1,308,047.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,772 : 616,720 = 616,720 : x
  2. Step 2: Convert to fraction form
    290,772/616,720 = 616,720/x
  3. Step 3: Cross multiply
    290,772x = 616,720 × 616,720
  4. Step 4: Simplify right side
    290,772x = 380,343,558,400
  5. Step 5: Solve for x
    x = 380,343,558,400/290,772
  6. Step 6: Final answer
    x = 1,308,047.40

Related Problems

Find third proportional to 145,386 and 308,360
Half scale
Find third proportional to 581,544 and 1,233,440
Double scale
Find third proportional to 290,774 and 616,724
Similar ratio
Find third proportional to 436,158 and 925,080
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.