Home / 818,768,341.30-1,228,705,119.39-320,717,078.68

Finding the Fourth Proportional to 818,768,341.30, 1,228,705,119.39 and 320,717,078.68

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Solution

The fourth proportional to 818,768,341.30, 1,228,705,119.39 and 320,717,078.68 is: 481,292,078.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,768,341.30 : 1,228,705,119.39 = 320,717,078.68 : x
  2. Step 2: Convert to fraction form
    818,768,341.30/1,228,705,119.39 = 320,717,078.68/x
  3. Step 3: Cross multiply
    818,768,341.30x = 1,228,705,119.39 × 320,717,078.68
  4. Step 4: Simplify right side
    818,768,341.30x = 394,066,716,449,921,472
  5. Step 5: Solve for x
    x = 394,066,716,449,921,472/818,768,341.30
  6. Step 6: Final answer
    x = 481,292,078.08

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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.