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Finding the Fourth Proportional to 579,691,892.80, 869,239,969.80 and 170,694,899.20

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Solution

The fourth proportional to 579,691,892.80, 869,239,969.80 and 170,694,899.20 is: 255,954,638.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,691,892.80 : 869,239,969.80 = 170,694,899.20 : x
  2. Step 2: Convert to fraction form
    579,691,892.80/869,239,969.80 = 170,694,899.20/x
  3. Step 3: Cross multiply
    579,691,892.80x = 869,239,969.80 × 170,694,899.20
  4. Step 4: Simplify right side
    579,691,892.80x = 148,374,829,025,622,016
  5. Step 5: Solve for x
    x = 148,374,829,025,622,016/579,691,892.80
  6. Step 6: Final answer
    x = 255,954,638.78

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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.