Home / 678,743.27-1,016,564.87-324,006.40

Finding the Fourth Proportional to 678,743.27, 1,016,564.87 and 324,006.40

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Solution

The fourth proportional to 678,743.27, 1,016,564.87 and 324,006.40 is: 485,269.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,743.27 : 1,016,564.87 = 324,006.40 : x
  2. Step 2: Convert to fraction form
    678,743.27/1,016,564.87 = 324,006.40/x
  3. Step 3: Cross multiply
    678,743.27x = 1,016,564.87 × 324,006.40
  4. Step 4: Simplify right side
    678,743.27x = 329,373,523,895.17
  5. Step 5: Solve for x
    x = 329,373,523,895.17/678,743.27
  6. Step 6: Final answer
    x = 485,269.67

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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.