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Finding the Fourth Proportional to 768,131.92, 1,059,852 and 445,654.96

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Solution

The fourth proportional to 768,131.92, 1,059,852 and 445,654.96 is: 614,905.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,131.92 : 1,059,852 = 445,654.96 : x
  2. Step 2: Convert to fraction form
    768,131.92/1,059,852 = 445,654.96/x
  3. Step 3: Cross multiply
    768,131.92x = 1,059,852 × 445,654.96
  4. Step 4: Simplify right side
    768,131.92x = 472,328,300,665.92
  5. Step 5: Solve for x
    x = 472,328,300,665.92/768,131.92
  6. Step 6: Final answer
    x = 614,905.19

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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.