Home / 427,933.08-640,880.76-247,638.42

Finding the Fourth Proportional to 427,933.08, 640,880.76 and 247,638.42

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Solution

The fourth proportional to 427,933.08, 640,880.76 and 247,638.42 is: 370,868.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,933.08 : 640,880.76 = 247,638.42 : x
  2. Step 2: Convert to fraction form
    427,933.08/640,880.76 = 247,638.42/x
  3. Step 3: Cross multiply
    427,933.08x = 640,880.76 × 247,638.42
  4. Step 4: Simplify right side
    427,933.08x = 158,706,698,814.80
  5. Step 5: Solve for x
    x = 158,706,698,814.80/427,933.08
  6. Step 6: Final answer
    x = 370,868.03

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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.