Home / 290,711,880-436,280,439

Finding the Third Proportional to 290,711,880 and 436,280,439

Calculator

Solution

The third proportional to 290,711,880 and 436,280,439 is: 654,739,742.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,711,880 : 436,280,439 = 436,280,439 : x
  2. Step 2: Convert to fraction form
    290,711,880/436,280,439 = 436,280,439/x
  3. Step 3: Cross multiply
    290,711,880x = 436,280,439 × 436,280,439
  4. Step 4: Simplify right side
    290,711,880x = 190,340,621,454,032,736
  5. Step 5: Solve for x
    x = 190,340,621,454,032,736/290,711,880
  6. Step 6: Final answer
    x = 654,739,742.50

Related Problems

Find third proportional to 145,355,940 and 218,140,219.50
Half scale
Find third proportional to 581,423,760 and 872,560,878
Double scale
Find third proportional to 290,711,882 and 436,280,442
Similar ratio
Find third proportional to 436,067,820 and 654,420,658.50
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.