Home / 427,580.85-641,471.01-123,981.34

Finding the Fourth Proportional to 427,580.85, 641,471.01 and 123,981.34

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Solution

The fourth proportional to 427,580.85, 641,471.01 and 123,981.34 is: 186,000.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,580.85 : 641,471.01 = 123,981.34 : x
  2. Step 2: Convert to fraction form
    427,580.85/641,471.01 = 123,981.34/x
  3. Step 3: Cross multiply
    427,580.85x = 641,471.01 × 123,981.34
  4. Step 4: Simplify right side
    427,580.85x = 79,530,435,390.95
  5. Step 5: Solve for x
    x = 79,530,435,390.95/427,580.85
  6. Step 6: Final answer
    x = 186,000.93

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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.