Home / 677.56-1,014-417.46

Finding the Fourth Proportional to 677.56, 1,014 and 417.46

Calculator

Solution

The fourth proportional to 677.56, 1,014 and 417.46 is: 624.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    677.56 : 1,014 = 417.46 : x
  2. Step 2: Convert to fraction form
    677.56/1,014 = 417.46/x
  3. Step 3: Cross multiply
    677.56x = 1,014 × 417.46
  4. Step 4: Simplify right side
    677.56x = 423,304.44
  5. Step 5: Solve for x
    x = 423,304.44/677.56
  6. Step 6: Final answer
    x = 624.75

Related Problems

Find fourth proportional to 338.78, 507 and 208.73
Half scale
Find fourth proportional to 1,355.12, 2,028 and 834.92
Double scale
Find fourth proportional to 678.56, 1,015.50 and 418.46
Similar ratio
Find fourth proportional to 1,016.34, 1,521 and 626.19
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.