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Finding the Fourth Proportional to 627,372,954.72, 865,769,899.52 and 345,109,333.06

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Solution

The fourth proportional to 627,372,954.72, 865,769,899.52 and 345,109,333.06 is: 476,248,251.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,372,954.72 : 865,769,899.52 = 345,109,333.06 : x
  2. Step 2: Convert to fraction form
    627,372,954.72/865,769,899.52 = 345,109,333.06/x
  3. Step 3: Cross multiply
    627,372,954.72x = 865,769,899.52 × 345,109,333.06
  4. Step 4: Simplify right side
    627,372,954.72x = 298,785,272,606,770,432
  5. Step 5: Solve for x
    x = 298,785,272,606,770,432/627,372,954.72
  6. Step 6: Final answer
    x = 476,248,251.31

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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.