Home / 764,439.91-1,054,927.75-420,281.70

Finding the Fourth Proportional to 764,439.91, 1,054,927.75 and 420,281.70

Calculator

Solution

The fourth proportional to 764,439.91, 1,054,927.75 and 420,281.70 is: 579,989.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,439.91 : 1,054,927.75 = 420,281.70 : x
  2. Step 2: Convert to fraction form
    764,439.91/1,054,927.75 = 420,281.70/x
  3. Step 3: Cross multiply
    764,439.91x = 1,054,927.75 × 420,281.70
  4. Step 4: Simplify right side
    764,439.91x = 443,366,828,147.18
  5. Step 5: Solve for x
    x = 443,366,828,147.18/764,439.91
  6. Step 6: Final answer
    x = 579,989.12

Related Problems

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.