Home / 289,708-432,880

Finding the Third Proportional to 289,708 and 432,880

Calculator

Solution

The third proportional to 289,708 and 432,880 is: 646,806.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,708 : 432,880 = 432,880 : x
  2. Step 2: Convert to fraction form
    289,708/432,880 = 432,880/x
  3. Step 3: Cross multiply
    289,708x = 432,880 × 432,880
  4. Step 4: Simplify right side
    289,708x = 187,385,094,400
  5. Step 5: Solve for x
    x = 187,385,094,400/289,708
  6. Step 6: Final answer
    x = 646,806.77

Related Problems

Find third proportional to 144,854 and 216,440
Half scale
Find third proportional to 579,416 and 865,760
Double scale
Find third proportional to 289,710 and 432,883
Similar ratio
Find third proportional to 434,562 and 649,320
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.