Home / 661,715,999.20-992,611,323.60-201,669,176.80

Finding the Fourth Proportional to 661,715,999.20, 992,611,323.60 and 201,669,176.80

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Solution

The fourth proportional to 661,715,999.20, 992,611,323.60 and 201,669,176.80 is: 302,515,140.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,715,999.20 : 992,611,323.60 = 201,669,176.80 : x
  2. Step 2: Convert to fraction form
    661,715,999.20/992,611,323.60 = 201,669,176.80/x
  3. Step 3: Cross multiply
    661,715,999.20x = 992,611,323.60 × 201,669,176.80
  4. Step 4: Simplify right side
    661,715,999.20x = 200,179,108,512,770,432
  5. Step 5: Solve for x
    x = 200,179,108,512,770,432/661,715,999.20
  6. Step 6: Final answer
    x = 302,515,140.57

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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.