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Finding the Fourth Proportional to 654,089,982.72, 981,396,714.24 and 265,942,648.32

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Solution

The fourth proportional to 654,089,982.72, 981,396,714.24 and 265,942,648.32 is: 399,020,391.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,089,982.72 : 981,396,714.24 = 265,942,648.32 : x
  2. Step 2: Convert to fraction form
    654,089,982.72/981,396,714.24 = 265,942,648.32/x
  3. Step 3: Cross multiply
    654,089,982.72x = 981,396,714.24 × 265,942,648.32
  4. Step 4: Simplify right side
    654,089,982.72x = 260,995,241,237,531,840
  5. Step 5: Solve for x
    x = 260,995,241,237,531,840/654,089,982.72
  6. Step 6: Final answer
    x = 399,020,391.89

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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.