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Finding the Fourth Proportional to 873,504,706.40, 1,310,257,059.60 and 806,991,912.80

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Solution

The fourth proportional to 873,504,706.40, 1,310,257,059.60 and 806,991,912.80 is: 1,210,487,869.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,504,706.40 : 1,310,257,059.60 = 806,991,912.80 : x
  2. Step 2: Convert to fraction form
    873,504,706.40/1,310,257,059.60 = 806,991,912.80/x
  3. Step 3: Cross multiply
    873,504,706.40x = 1,310,257,059.60 × 806,991,912.80
  4. Step 4: Simplify right side
    873,504,706.40x = 1,057,366,850,786,307,456
  5. Step 5: Solve for x
    x = 1,057,366,850,786,307,456/873,504,706.40
  6. Step 6: Final answer
    x = 1,210,487,869.20

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1.5x scale

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.