Home / 784,365,202.21-1,082,389,063.38-449,597,729.20

Finding the Fourth Proportional to 784,365,202.21, 1,082,389,063.38 and 449,597,729.20

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Solution

The fourth proportional to 784,365,202.21, 1,082,389,063.38 and 449,597,729.20 is: 620,424,852.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    784,365,202.21 : 1,082,389,063.38 = 449,597,729.20 : x
  2. Step 2: Convert to fraction form
    784,365,202.21/1,082,389,063.38 = 449,597,729.20/x
  3. Step 3: Cross multiply
    784,365,202.21x = 1,082,389,063.38 × 449,597,729.20
  4. Step 4: Simplify right side
    784,365,202.21x = 486,639,664,998,902,912
  5. Step 5: Solve for x
    x = 486,639,664,998,902,912/784,365,202.21
  6. Step 6: Final answer
    x = 620,424,852.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.