Home / 309,390-492,304

Finding the Third Proportional to 309,390 and 492,304

Calculator

Solution

The third proportional to 309,390 and 492,304 is: 783,358.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,390 : 492,304 = 492,304 : x
  2. Step 2: Convert to fraction form
    309,390/492,304 = 492,304/x
  3. Step 3: Cross multiply
    309,390x = 492,304 × 492,304
  4. Step 4: Simplify right side
    309,390x = 242,363,228,416
  5. Step 5: Solve for x
    x = 242,363,228,416/309,390
  6. Step 6: Final answer
    x = 783,358.31

Related Problems

Find third proportional to 154,695 and 246,152
Half scale
Find third proportional to 618,780 and 984,608
Double scale
Find third proportional to 309,392 and 492,307
Similar ratio
Find third proportional to 464,085 and 738,456
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.