Home / 291,139-636,587

Finding the Third Proportional to 291,139 and 636,587

Calculator

Solution

The third proportional to 291,139 and 636,587 is: 1,391,922.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,139 : 636,587 = 636,587 : x
  2. Step 2: Convert to fraction form
    291,139/636,587 = 636,587/x
  3. Step 3: Cross multiply
    291,139x = 636,587 × 636,587
  4. Step 4: Simplify right side
    291,139x = 405,243,008,569
  5. Step 5: Solve for x
    x = 405,243,008,569/291,139
  6. Step 6: Final answer
    x = 1,391,922.79

Related Problems

Find third proportional to 145,569.50 and 318,293.50
Half scale
Find third proportional to 582,278 and 1,273,174
Double scale
Find third proportional to 291,141 and 636,591
Similar ratio
Find third proportional to 436,708.50 and 954,880.50
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.