Home / 440,748,400.40-661,122,600.60-393,131,286.80

Finding the Fourth Proportional to 440,748,400.40, 661,122,600.60 and 393,131,286.80

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Solution

The fourth proportional to 440,748,400.40, 661,122,600.60 and 393,131,286.80 is: 589,696,930.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,748,400.40 : 661,122,600.60 = 393,131,286.80 : x
  2. Step 2: Convert to fraction form
    440,748,400.40/661,122,600.60 = 393,131,286.80/x
  3. Step 3: Cross multiply
    440,748,400.40x = 661,122,600.60 × 393,131,286.80
  4. Step 4: Simplify right side
    440,748,400.40x = 259,907,978,706,440,480
  5. Step 5: Solve for x
    x = 259,907,978,706,440,480/440,748,400.40
  6. Step 6: Final answer
    x = 589,696,930.20

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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.