Home / 305,339-645,124

Finding the Third Proportional to 305,339 and 645,124

Calculator

Solution

The third proportional to 305,339 and 645,124 is: 1,363,025.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,339 : 645,124 = 645,124 : x
  2. Step 2: Convert to fraction form
    305,339/645,124 = 645,124/x
  3. Step 3: Cross multiply
    305,339x = 645,124 × 645,124
  4. Step 4: Simplify right side
    305,339x = 416,184,975,376
  5. Step 5: Solve for x
    x = 416,184,975,376/305,339
  6. Step 6: Final answer
    x = 1,363,025.93

Related Problems

Find third proportional to 152,669.50 and 322,562
Half scale
Find third proportional to 610,678 and 1,290,248
Double scale
Find third proportional to 305,341 and 645,128
Similar ratio
Find third proportional to 458,008.50 and 967,686
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.