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Finding the Fourth Proportional to 856,508.80, 1,283,428.80 and 323,739.20

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Solution

The fourth proportional to 856,508.80, 1,283,428.80 and 323,739.20 is: 485,104.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,508.80 : 1,283,428.80 = 323,739.20 : x
  2. Step 2: Convert to fraction form
    856,508.80/1,283,428.80 = 323,739.20/x
  3. Step 3: Cross multiply
    856,508.80x = 1,283,428.80 × 323,739.20
  4. Step 4: Simplify right side
    856,508.80x = 415,496,212,968.96
  5. Step 5: Solve for x
    x = 415,496,212,968.96/856,508.80
  6. Step 6: Final answer
    x = 485,104.43

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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.