Home / 177,918-390,828

Finding the Third Proportional to 177,918 and 390,828

Calculator

Solution

The third proportional to 177,918 and 390,828 is: 858,522.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,918 : 390,828 = 390,828 : x
  2. Step 2: Convert to fraction form
    177,918/390,828 = 390,828/x
  3. Step 3: Cross multiply
    177,918x = 390,828 × 390,828
  4. Step 4: Simplify right side
    177,918x = 152,746,525,584
  5. Step 5: Solve for x
    x = 152,746,525,584/177,918
  6. Step 6: Final answer
    x = 858,522.05

Related Problems

Find third proportional to 88,959 and 195,414
Half scale
Find third proportional to 355,836 and 781,656
Double scale
Find third proportional to 177,920 and 390,832
Similar ratio
Find third proportional to 266,877 and 586,242
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.