Home / 764,939,090.20-1,147,642,803.44-391,711,235.55

Finding the Fourth Proportional to 764,939,090.20, 1,147,642,803.44 and 391,711,235.55

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Solution

The fourth proportional to 764,939,090.20, 1,147,642,803.44 and 391,711,235.55 is: 587,686,766.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,939,090.20 : 1,147,642,803.44 = 391,711,235.55 : x
  2. Step 2: Convert to fraction form
    764,939,090.20/1,147,642,803.44 = 391,711,235.55/x
  3. Step 3: Cross multiply
    764,939,090.20x = 1,147,642,803.44 × 391,711,235.55
  4. Step 4: Simplify right side
    764,939,090.20x = 449,544,580,505,548,224
  5. Step 5: Solve for x
    x = 449,544,580,505,548,224/764,939,090.20
  6. Step 6: Final answer
    x = 587,686,766.52

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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.