Home / 505,247,655.78-757,090,304.28-394,320,308.76

Finding the Fourth Proportional to 505,247,655.78, 757,090,304.28 and 394,320,308.76

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Solution

The fourth proportional to 505,247,655.78, 757,090,304.28 and 394,320,308.76 is: 590,870,792.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,247,655.78 : 757,090,304.28 = 394,320,308.76 : x
  2. Step 2: Convert to fraction form
    505,247,655.78/757,090,304.28 = 394,320,308.76/x
  3. Step 3: Cross multiply
    505,247,655.78x = 757,090,304.28 × 394,320,308.76
  4. Step 4: Simplify right side
    505,247,655.78x = 298,536,082,542,891,904
  5. Step 5: Solve for x
    x = 298,536,082,542,891,904/505,247,655.78
  6. Step 6: Final answer
    x = 590,870,792.03

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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.