Home / 817,644-1,128,366-459,948

Finding the Fourth Proportional to 817,644, 1,128,366 and 459,948

Calculator

Solution

The fourth proportional to 817,644, 1,128,366 and 459,948 is: 634,737.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,644 : 1,128,366 = 459,948 : x
  2. Step 2: Convert to fraction form
    817,644/1,128,366 = 459,948/x
  3. Step 3: Cross multiply
    817,644x = 1,128,366 × 459,948
  4. Step 4: Simplify right side
    817,644x = 518,989,684,968
  5. Step 5: Solve for x
    x = 518,989,684,968/817,644
  6. Step 6: Final answer
    x = 634,737.96

Related Problems

Find fourth proportional to 408,822, 564,183 and 229,974
Half scale
Find fourth proportional to 1,635,288, 2,256,732 and 919,896
Double scale
Find fourth proportional to 817,645, 1,128,367.38 and 459,949
Similar ratio
Find fourth proportional to 1,226,466, 1,692,549 and 689,922
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.