Home / 437,486-685,388

Finding the Third Proportional to 437,486 and 685,388

Calculator

Solution

The third proportional to 437,486 and 685,388 is: 1,073,763.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,486 : 685,388 = 685,388 : x
  2. Step 2: Convert to fraction form
    437,486/685,388 = 685,388/x
  3. Step 3: Cross multiply
    437,486x = 685,388 × 685,388
  4. Step 4: Simplify right side
    437,486x = 469,756,710,544
  5. Step 5: Solve for x
    x = 469,756,710,544/437,486
  6. Step 6: Final answer
    x = 1,073,763.98

Related Problems

Find third proportional to 218,743 and 342,694
Half scale
Find third proportional to 874,972 and 1,370,776
Double scale
Find third proportional to 437,488 and 685,391
Similar ratio
Find third proportional to 656,229 and 1,028,082
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.