Home / 328,378-709,148

Finding the Third Proportional to 328,378 and 709,148

Calculator

Solution

The third proportional to 328,378 and 709,148 is: 1,531,439.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,378 : 709,148 = 709,148 : x
  2. Step 2: Convert to fraction form
    328,378/709,148 = 709,148/x
  3. Step 3: Cross multiply
    328,378x = 709,148 × 709,148
  4. Step 4: Simplify right side
    328,378x = 502,890,885,904
  5. Step 5: Solve for x
    x = 502,890,885,904/328,378
  6. Step 6: Final answer
    x = 1,531,439.03

Related Problems

Find third proportional to 164,189 and 354,574
Half scale
Find third proportional to 656,756 and 1,418,296
Double scale
Find third proportional to 328,380 and 709,152
Similar ratio
Find third proportional to 492,567 and 1,063,722
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.