Home / 458,310.76-687,499.02-191,803

Finding the Fourth Proportional to 458,310.76, 687,499.02 and 191,803

Calculator

Solution

The fourth proportional to 458,310.76, 687,499.02 and 191,803 is: 287,718.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,310.76 : 687,499.02 = 191,803 : x
  2. Step 2: Convert to fraction form
    458,310.76/687,499.02 = 191,803/x
  3. Step 3: Cross multiply
    458,310.76x = 687,499.02 × 191,803
  4. Step 4: Simplify right side
    458,310.76x = 131,864,374,533.06
  5. Step 5: Solve for x
    x = 131,864,374,533.06/458,310.76
  6. Step 6: Final answer
    x = 287,718.26

Related Problems

Find fourth proportional to 229,155.38, 343,749.51 and 95,901.50
Half scale
Find fourth proportional to 916,621.52, 1,374,998.04 and 383,606
Double scale
Find fourth proportional to 458,311.76, 687,500.52 and 191,804
Similar ratio
Find fourth proportional to 687,466.14, 1,031,248.53 and 287,704.50
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.