Home / 280,520-424,137

Finding the Third Proportional to 280,520 and 424,137

Calculator

Solution

The third proportional to 280,520 and 424,137 is: 641,281.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,520 : 424,137 = 424,137 : x
  2. Step 2: Convert to fraction form
    280,520/424,137 = 424,137/x
  3. Step 3: Cross multiply
    280,520x = 424,137 × 424,137
  4. Step 4: Simplify right side
    280,520x = 179,892,194,769
  5. Step 5: Solve for x
    x = 179,892,194,769/280,520
  6. Step 6: Final answer
    x = 641,281.17

Related Problems

Find third proportional to 140,260 and 212,068.50
Half scale
Find third proportional to 561,040 and 848,274
Double scale
Find third proportional to 280,522 and 424,140
Similar ratio
Find third proportional to 420,780 and 636,205.50
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.