Home / 764,946,221.20-1,147,419,331.80-611,891,213.20

Finding the Fourth Proportional to 764,946,221.20, 1,147,419,331.80 and 611,891,213.20

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Solution

The fourth proportional to 764,946,221.20, 1,147,419,331.80 and 611,891,213.20 is: 917,836,819.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,946,221.20 : 1,147,419,331.80 = 611,891,213.20 : x
  2. Step 2: Convert to fraction form
    764,946,221.20/1,147,419,331.80 = 611,891,213.20/x
  3. Step 3: Cross multiply
    764,946,221.20x = 1,147,419,331.80 × 611,891,213.20
  4. Step 4: Simplify right side
    764,946,221.20x = 702,095,806,984,235,392
  5. Step 5: Solve for x
    x = 702,095,806,984,235,392/764,946,221.20
  6. Step 6: Final answer
    x = 917,836,819.80

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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.