Home / 684,658.28-944,755.56-378,686

Finding the Fourth Proportional to 684,658.28, 944,755.56 and 378,686

Calculator

Solution

The fourth proportional to 684,658.28, 944,755.56 and 378,686 is: 522,546.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,658.28 : 944,755.56 = 378,686 : x
  2. Step 2: Convert to fraction form
    684,658.28/944,755.56 = 378,686/x
  3. Step 3: Cross multiply
    684,658.28x = 944,755.56 × 378,686
  4. Step 4: Simplify right side
    684,658.28x = 357,765,703,994.16
  5. Step 5: Solve for x
    x = 357,765,703,994.16/684,658.28
  6. Step 6: Final answer
    x = 522,546.38

Related Problems

Find fourth proportional to 342,329.14, 472,377.78 and 189,343
Half scale
Find fourth proportional to 1,369,316.56, 1,889,511.12 and 757,372
Double scale
Find fourth proportional to 684,659.28, 944,756.94 and 378,687
Similar ratio
Find fourth proportional to 1,026,987.42, 1,417,133.34 and 568,029
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.