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Finding the Fourth Proportional to 638,893,954.18, 881,713,978.05 and 360,333,839.62

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Solution

The fourth proportional to 638,893,954.18, 881,713,978.05 and 360,333,839.62 is: 497,283,439.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,893,954.18 : 881,713,978.05 = 360,333,839.62 : x
  2. Step 2: Convert to fraction form
    638,893,954.18/881,713,978.05 = 360,333,839.62/x
  3. Step 3: Cross multiply
    638,893,954.18x = 881,713,978.05 × 360,333,839.62
  4. Step 4: Simplify right side
    638,893,954.18x = 317,711,383,157,380,864
  5. Step 5: Solve for x
    x = 317,711,383,157,380,864/638,893,954.18
  6. Step 6: Final answer
    x = 497,283,439.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.