Home / 777,090.40-1,072,470-490,595.68

Finding the Fourth Proportional to 777,090.40, 1,072,470 and 490,595.68

Calculator

Solution

The fourth proportional to 777,090.40, 1,072,470 and 490,595.68 is: 677,075.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,090.40 : 1,072,470 = 490,595.68 : x
  2. Step 2: Convert to fraction form
    777,090.40/1,072,470 = 490,595.68/x
  3. Step 3: Cross multiply
    777,090.40x = 1,072,470 × 490,595.68
  4. Step 4: Simplify right side
    777,090.40x = 526,149,148,929.60
  5. Step 5: Solve for x
    x = 526,149,148,929.60/777,090.40
  6. Step 6: Final answer
    x = 677,075.86

Related Problems

Find fourth proportional to 388,545.20, 536,235 and 245,297.84
Half scale
Find fourth proportional to 1,554,180.80, 2,144,940 and 981,191.36
Double scale
Find fourth proportional to 777,091.40, 1,072,471.38 and 490,596.68
Similar ratio
Find fourth proportional to 1,165,635.60, 1,608,705 and 735,893.52
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.