Home / 429,038-642,729

Finding the Third Proportional to 429,038 and 642,729

Calculator

Solution

The third proportional to 429,038 and 642,729 is: 962,853.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,038 : 642,729 = 642,729 : x
  2. Step 2: Convert to fraction form
    429,038/642,729 = 642,729/x
  3. Step 3: Cross multiply
    429,038x = 642,729 × 642,729
  4. Step 4: Simplify right side
    429,038x = 413,100,567,441
  5. Step 5: Solve for x
    x = 413,100,567,441/429,038
  6. Step 6: Final answer
    x = 962,853.10

Related Problems

Find third proportional to 214,519 and 321,364.50
Half scale
Find third proportional to 858,076 and 1,285,458
Double scale
Find third proportional to 429,040 and 642,732
Similar ratio
Find third proportional to 643,557 and 964,093.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.