Home / 770,817,659.20-1,155,843,909.60-279,511,316.80

Finding the Fourth Proportional to 770,817,659.20, 1,155,843,909.60 and 279,511,316.80

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Solution

The fourth proportional to 770,817,659.20, 1,155,843,909.60 and 279,511,316.80 is: 419,128,245.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,817,659.20 : 1,155,843,909.60 = 279,511,316.80 : x
  2. Step 2: Convert to fraction form
    770,817,659.20/1,155,843,909.60 = 279,511,316.80/x
  3. Step 3: Cross multiply
    770,817,659.20x = 1,155,843,909.60 × 279,511,316.80
  4. Step 4: Simplify right side
    770,817,659.20x = 323,071,453,187,556,160
  5. Step 5: Solve for x
    x = 323,071,453,187,556,160/770,817,659.20
  6. Step 6: Final answer
    x = 419,128,245.61

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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.