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Finding the Fourth Proportional to 636,149,404.80, 955,119,902.40 and 394,284,700.80

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Solution

The fourth proportional to 636,149,404.80, 955,119,902.40 and 394,284,700.80 is: 591,982,264.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,149,404.80 : 955,119,902.40 = 394,284,700.80 : x
  2. Step 2: Convert to fraction form
    636,149,404.80/955,119,902.40 = 394,284,700.80/x
  3. Step 3: Cross multiply
    636,149,404.80x = 955,119,902.40 × 394,284,700.80
  4. Step 4: Simplify right side
    636,149,404.80x = 376,589,164,945,909,184
  5. Step 5: Solve for x
    x = 376,589,164,945,909,184/636,149,404.80
  6. Step 6: Final answer
    x = 591,982,264.08

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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.