Home / 629,856,280.80-945,792,190.80-426,286,821.60

Finding the Fourth Proportional to 629,856,280.80, 945,792,190.80 and 426,286,821.60

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Solution

The fourth proportional to 629,856,280.80, 945,792,190.80 and 426,286,821.60 is: 640,112,291.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,856,280.80 : 945,792,190.80 = 426,286,821.60 : x
  2. Step 2: Convert to fraction form
    629,856,280.80/945,792,190.80 = 426,286,821.60/x
  3. Step 3: Cross multiply
    629,856,280.80x = 945,792,190.80 × 426,286,821.60
  4. Step 4: Simplify right side
    629,856,280.80x = 403,178,746,910,232,768
  5. Step 5: Solve for x
    x = 403,178,746,910,232,768/629,856,280.80
  6. Step 6: Final answer
    x = 640,112,291.01

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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.