Home / 678,743.31-1,016,564.91-324,006.44

Finding the Fourth Proportional to 678,743.31, 1,016,564.91 and 324,006.44

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Solution

The fourth proportional to 678,743.31, 1,016,564.91 and 324,006.44 is: 485,269.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,743.31 : 1,016,564.91 = 324,006.44 : x
  2. Step 2: Convert to fraction form
    678,743.31/1,016,564.91 = 324,006.44/x
  3. Step 3: Cross multiply
    678,743.31x = 1,016,564.91 × 324,006.44
  4. Step 4: Simplify right side
    678,743.31x = 329,373,577,518.02
  5. Step 5: Solve for x
    x = 329,373,577,518.02/678,743.31
  6. Step 6: Final answer
    x = 485,269.72

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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.