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Finding the Fourth Proportional to 629,857,492.80, 945,794,008.80 and 426,288,033.60

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Solution

The fourth proportional to 629,857,492.80, 945,794,008.80 and 426,288,033.60 is: 640,114,109.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,857,492.80 : 945,794,008.80 = 426,288,033.60 : x
  2. Step 2: Convert to fraction form
    629,857,492.80/945,794,008.80 = 426,288,033.60/x
  3. Step 3: Cross multiply
    629,857,492.80x = 945,794,008.80 × 426,288,033.60
  4. Step 4: Simplify right side
    629,857,492.80x = 403,180,668,202,013,120
  5. Step 5: Solve for x
    x = 403,180,668,202,013,120/629,857,492.80
  6. Step 6: Final answer
    x = 640,114,109.64

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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.