Home / 291,120-636,376

Finding the Third Proportional to 291,120 and 636,376

Calculator

Solution

The third proportional to 291,120 and 636,376 is: 1,391,091.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,120 : 636,376 = 636,376 : x
  2. Step 2: Convert to fraction form
    291,120/636,376 = 636,376/x
  3. Step 3: Cross multiply
    291,120x = 636,376 × 636,376
  4. Step 4: Simplify right side
    291,120x = 404,974,413,376
  5. Step 5: Solve for x
    x = 404,974,413,376/291,120
  6. Step 6: Final answer
    x = 1,391,091.01

Related Problems

Find third proportional to 145,560 and 318,188
Half scale
Find third proportional to 582,240 and 1,272,752
Double scale
Find third proportional to 291,122 and 636,380
Similar ratio
Find third proportional to 436,680 and 954,564
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.