Home / 287,586-435,402

Finding the Third Proportional to 287,586 and 435,402

Calculator

Solution

The third proportional to 287,586 and 435,402 is: 659,193.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,586 : 435,402 = 435,402 : x
  2. Step 2: Convert to fraction form
    287,586/435,402 = 435,402/x
  3. Step 3: Cross multiply
    287,586x = 435,402 × 435,402
  4. Step 4: Simplify right side
    287,586x = 189,574,901,604
  5. Step 5: Solve for x
    x = 189,574,901,604/287,586
  6. Step 6: Final answer
    x = 659,193.78

Related Problems

Find third proportional to 143,793 and 217,701
Half scale
Find third proportional to 575,172 and 870,804
Double scale
Find third proportional to 287,588 and 435,405
Similar ratio
Find third proportional to 431,379 and 653,103
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.