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Finding the Fourth Proportional to 669,515,968.62, 923,868,609.03 and 372,122,897.22

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Solution

The fourth proportional to 669,515,968.62, 923,868,609.03 and 372,122,897.22 is: 513,494,344.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,515,968.62 : 923,868,609.03 = 372,122,897.22 : x
  2. Step 2: Convert to fraction form
    669,515,968.62/923,868,609.03 = 372,122,897.22/x
  3. Step 3: Cross multiply
    669,515,968.62x = 923,868,609.03 × 372,122,897.22
  4. Step 4: Simplify right side
    669,515,968.62x = 343,792,663,442,855,040
  5. Step 5: Solve for x
    x = 343,792,663,442,855,040/669,515,968.62
  6. Step 6: Final answer
    x = 513,494,344.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.