Home / 818,768,340.30-1,228,705,117.89-320,717,077.68

Finding the Fourth Proportional to 818,768,340.30, 1,228,705,117.89 and 320,717,077.68

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Solution

The fourth proportional to 818,768,340.30, 1,228,705,117.89 and 320,717,077.68 is: 481,292,076.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,768,340.30 : 1,228,705,117.89 = 320,717,077.68 : x
  2. Step 2: Convert to fraction form
    818,768,340.30/1,228,705,117.89 = 320,717,077.68/x
  3. Step 3: Cross multiply
    818,768,340.30x = 1,228,705,117.89 × 320,717,077.68
  4. Step 4: Simplify right side
    818,768,340.30x = 394,066,714,740,140,736
  5. Step 5: Solve for x
    x = 394,066,714,740,140,736/818,768,340.30
  6. Step 6: Final answer
    x = 481,292,076.58

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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.