Home / 919,631,999.20-1,379,447,998.80-819,862,808.80

Finding the Fourth Proportional to 919,631,999.20, 1,379,447,998.80 and 819,862,808.80

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Solution

The fourth proportional to 919,631,999.20, 1,379,447,998.80 and 819,862,808.80 is: 1,229,794,213.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,631,999.20 : 1,379,447,998.80 = 819,862,808.80 : x
  2. Step 2: Convert to fraction form
    919,631,999.20/1,379,447,998.80 = 819,862,808.80/x
  3. Step 3: Cross multiply
    919,631,999.20x = 1,379,447,998.80 × 819,862,808.80
  4. Step 4: Simplify right side
    919,631,999.20x = 1,130,958,110,889,706,880
  5. Step 5: Solve for x
    x = 1,130,958,110,889,706,880/919,631,999.20
  6. Step 6: Final answer
    x = 1,229,794,213.20

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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.