Home / 1,259,711,999.70-1,889,567,999.55-1,213,795,497.30

Finding the Fourth Proportional to 1,259,711,999.70, 1,889,567,999.55 and 1,213,795,497.30

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Solution

The fourth proportional to 1,259,711,999.70, 1,889,567,999.55 and 1,213,795,497.30 is: 1,820,693,245.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,711,999.70 : 1,889,567,999.55 = 1,213,795,497.30 : x
  2. Step 2: Convert to fraction form
    1,259,711,999.70/1,889,567,999.55 = 1,213,795,497.30/x
  3. Step 3: Cross multiply
    1,259,711,999.70x = 1,889,567,999.55 × 1,213,795,497.30
  4. Step 4: Simplify right side
    1,259,711,999.70x = 2,293,549,129,695,958,272
  5. Step 5: Solve for x
    x = 2,293,549,129,695,958,272/1,259,711,999.70
  6. Step 6: Final answer
    x = 1,820,693,245.95

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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.