Home / 1,021,489,387.80-1,532,433,147.30-407,969,208.60

Finding the Fourth Proportional to 1,021,489,387.80, 1,532,433,147.30 and 407,969,208.60

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Solution

The fourth proportional to 1,021,489,387.80, 1,532,433,147.30 and 407,969,208.60 is: 612,033,317.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021,489,387.80 : 1,532,433,147.30 = 407,969,208.60 : x
  2. Step 2: Convert to fraction form
    1,021,489,387.80/1,532,433,147.30 = 407,969,208.60/x
  3. Step 3: Cross multiply
    1,021,489,387.80x = 1,532,433,147.30 × 407,969,208.60
  4. Step 4: Simplify right side
    1,021,489,387.80x = 625,185,538,336,388,224
  5. Step 5: Solve for x
    x = 625,185,538,336,388,224/1,021,489,387.80
  6. Step 6: Final answer
    x = 612,033,317.04

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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.