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Finding the Fourth Proportional to 479,683,391.40, 719,525,087.10 and 445,246,014.60

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Solution

The fourth proportional to 479,683,391.40, 719,525,087.10 and 445,246,014.60 is: 667,869,021.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,683,391.40 : 719,525,087.10 = 445,246,014.60 : x
  2. Step 2: Convert to fraction form
    479,683,391.40/719,525,087.10 = 445,246,014.60/x
  3. Step 3: Cross multiply
    479,683,391.40x = 719,525,087.10 × 445,246,014.60
  4. Step 4: Simplify right side
    479,683,391.40x = 320,365,677,435,992,896
  5. Step 5: Solve for x
    x = 320,365,677,435,992,896/479,683,391.40
  6. Step 6: Final answer
    x = 667,869,021.90

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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.