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Finding the Fourth Proportional to 1,324,379,625.78, 1,986,503,402.67 and 495,272,313.78

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Solution

The fourth proportional to 1,324,379,625.78, 1,986,503,402.67 and 495,272,313.78 is: 742,883,775.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,324,379,625.78 : 1,986,503,402.67 = 495,272,313.78 : x
  2. Step 2: Convert to fraction form
    1,324,379,625.78/1,986,503,402.67 = 495,272,313.78/x
  3. Step 3: Cross multiply
    1,324,379,625.78x = 1,986,503,402.67 × 495,272,313.78
  4. Step 4: Simplify right side
    1,324,379,625.78x = 983,860,136,572,213,888
  5. Step 5: Solve for x
    x = 983,860,136,572,213,888/1,324,379,625.78
  6. Step 6: Final answer
    x = 742,883,775.48

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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.