Home / 427,223.40-640,980.90-190,638.60

Finding the Fourth Proportional to 427,223.40, 640,980.90 and 190,638.60

Calculator

Solution

The fourth proportional to 427,223.40, 640,980.90 and 190,638.60 is: 286,022.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,223.40 : 640,980.90 = 190,638.60 : x
  2. Step 2: Convert to fraction form
    427,223.40/640,980.90 = 190,638.60/x
  3. Step 3: Cross multiply
    427,223.40x = 640,980.90 × 190,638.60
  4. Step 4: Simplify right side
    427,223.40x = 122,195,701,402.74
  5. Step 5: Solve for x
    x = 122,195,701,402.74/427,223.40
  6. Step 6: Final answer
    x = 286,022.96

Related Problems

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.