Home / 978,313.20-1,372,126.80-978,313.20

Finding the Fourth Proportional to 978,313.20, 1,372,126.80 and 978,313.20

Calculator

Solution

The fourth proportional to 978,313.20, 1,372,126.80 and 978,313.20 is: 1,372,126.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,313.20 : 1,372,126.80 = 978,313.20 : x
  2. Step 2: Convert to fraction form
    978,313.20/1,372,126.80 = 978,313.20/x
  3. Step 3: Cross multiply
    978,313.20x = 1,372,126.80 × 978,313.20
  4. Step 4: Simplify right side
    978,313.20x = 1,342,369,760,513.76
  5. Step 5: Solve for x
    x = 1,342,369,760,513.76/978,313.20
  6. Step 6: Final answer
    x = 1,372,126.80

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.