Home / 280,536-423,724

Finding the Third Proportional to 280,536 and 423,724

Calculator

Solution

The third proportional to 280,536 and 423,724 is: 639,996.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,536 : 423,724 = 423,724 : x
  2. Step 2: Convert to fraction form
    280,536/423,724 = 423,724/x
  3. Step 3: Cross multiply
    280,536x = 423,724 × 423,724
  4. Step 4: Simplify right side
    280,536x = 179,542,028,176
  5. Step 5: Solve for x
    x = 179,542,028,176/280,536
  6. Step 6: Final answer
    x = 639,996.39

Related Problems

Find third proportional to 140,268 and 211,862
Half scale
Find third proportional to 561,072 and 847,448
Double scale
Find third proportional to 280,538 and 423,727
Similar ratio
Find third proportional to 420,804 and 635,586
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.