Home / 129,298,500-287,294,868

Finding the Third Proportional to 129,298,500 and 287,294,868

Calculator

Solution

The third proportional to 129,298,500 and 287,294,868 is: 638,354,978.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,298,500 : 287,294,868 = 287,294,868 : x
  2. Step 2: Convert to fraction form
    129,298,500/287,294,868 = 287,294,868/x
  3. Step 3: Cross multiply
    129,298,500x = 287,294,868 × 287,294,868
  4. Step 4: Simplify right side
    129,298,500x = 82,538,341,179,137,424
  5. Step 5: Solve for x
    x = 82,538,341,179,137,424/129,298,500
  6. Step 6: Final answer
    x = 638,354,978.43

Related Problems

Find third proportional to 64,649,250 and 143,647,434
Half scale
Find third proportional to 258,597,000 and 574,589,736
Double scale
Find third proportional to 129,298,502 and 287,294,872
Similar ratio
Find third proportional to 193,947,750 and 430,942,302
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.