Home / 678,905.42-1,016,806.89-324,167.90

Finding the Fourth Proportional to 678,905.42, 1,016,806.89 and 324,167.90

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Solution

The fourth proportional to 678,905.42, 1,016,806.89 and 324,167.90 is: 485,511.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,905.42 : 1,016,806.89 = 324,167.90 : x
  2. Step 2: Convert to fraction form
    678,905.42/1,016,806.89 = 324,167.90/x
  3. Step 3: Cross multiply
    678,905.42x = 1,016,806.89 × 324,167.90
  4. Step 4: Simplify right side
    678,905.42x = 329,616,154,236.83
  5. Step 5: Solve for x
    x = 329,616,154,236.83/678,905.42
  6. Step 6: Final answer
    x = 485,511.15

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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.