Home / 818,883,940.80-1,228,325,911.20-543,384,926.40

Finding the Fourth Proportional to 818,883,940.80, 1,228,325,911.20 and 543,384,926.40

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Solution

The fourth proportional to 818,883,940.80, 1,228,325,911.20 and 543,384,926.40 is: 815,077,389.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,883,940.80 : 1,228,325,911.20 = 543,384,926.40 : x
  2. Step 2: Convert to fraction form
    818,883,940.80/1,228,325,911.20 = 543,384,926.40/x
  3. Step 3: Cross multiply
    818,883,940.80x = 1,228,325,911.20 × 543,384,926.40
  4. Step 4: Simplify right side
    818,883,940.80x = 667,453,784,852,624,896
  5. Step 5: Solve for x
    x = 667,453,784,852,624,896/818,883,940.80
  6. Step 6: Final answer
    x = 815,077,389.60

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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.