Home / 624.36-936-486.66

Finding the Fourth Proportional to 624.36, 936 and 486.66

Calculator

Solution

The fourth proportional to 624.36, 936 and 486.66 is: 729.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.36 : 936 = 486.66 : x
  2. Step 2: Convert to fraction form
    624.36/936 = 486.66/x
  3. Step 3: Cross multiply
    624.36x = 936 × 486.66
  4. Step 4: Simplify right side
    624.36x = 455,513.76
  5. Step 5: Solve for x
    x = 455,513.76/624.36
  6. Step 6: Final answer
    x = 729.57

Related Problems

Find fourth proportional to 312.18, 468 and 243.33
Half scale
Find fourth proportional to 1,248.72, 1,872 and 973.32
Double scale
Find fourth proportional to 625.36, 937.50 and 487.66
Similar ratio
Find fourth proportional to 936.54, 1,404 and 729.99
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.