Home / 808,515,009.40-1,212,772,514.10-324,188,404.60

Finding the Fourth Proportional to 808,515,009.40, 1,212,772,514.10 and 324,188,404.60

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Solution

The fourth proportional to 808,515,009.40, 1,212,772,514.10 and 324,188,404.60 is: 486,282,606.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,515,009.40 : 1,212,772,514.10 = 324,188,404.60 : x
  2. Step 2: Convert to fraction form
    808,515,009.40/1,212,772,514.10 = 324,188,404.60/x
  3. Step 3: Cross multiply
    808,515,009.40x = 1,212,772,514.10 × 324,188,404.60
  4. Step 4: Simplify right side
    808,515,009.40x = 393,166,786,488,809,984
  5. Step 5: Solve for x
    x = 393,166,786,488,809,984/808,515,009.40
  6. Step 6: Final answer
    x = 486,282,606.90

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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.