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Finding the Fourth Proportional to 479,694,873.34, 719,542,219.23 and 261,528,676.30

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Solution

The fourth proportional to 479,694,873.34, 719,542,219.23 and 261,528,676.30 is: 392,292,964.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,694,873.34 : 719,542,219.23 = 261,528,676.30 : x
  2. Step 2: Convert to fraction form
    479,694,873.34/719,542,219.23 = 261,528,676.30/x
  3. Step 3: Cross multiply
    479,694,873.34x = 719,542,219.23 × 261,528,676.30
  4. Step 4: Simplify right side
    479,694,873.34x = 188,180,924,137,186,304
  5. Step 5: Solve for x
    x = 188,180,924,137,186,304/479,694,873.34
  6. Step 6: Final answer
    x = 392,292,964.96

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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.