Home / 435,240-665,820

Finding the Third Proportional to 435,240 and 665,820

Calculator

Solution

The third proportional to 435,240 and 665,820 is: 1,018,555.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,240 : 665,820 = 665,820 : x
  2. Step 2: Convert to fraction form
    435,240/665,820 = 665,820/x
  3. Step 3: Cross multiply
    435,240x = 665,820 × 665,820
  4. Step 4: Simplify right side
    435,240x = 443,316,272,400
  5. Step 5: Solve for x
    x = 443,316,272,400/435,240
  6. Step 6: Final answer
    x = 1,018,555.91

Related Problems

Find third proportional to 217,620 and 332,910
Half scale
Find third proportional to 870,480 and 1,331,640
Double scale
Find third proportional to 435,242 and 665,823
Similar ratio
Find third proportional to 652,860 and 998,730
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.