Home / 347,789.40-521,684.10-324,288.60

Finding the Fourth Proportional to 347,789.40, 521,684.10 and 324,288.60

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Solution

The fourth proportional to 347,789.40, 521,684.10 and 324,288.60 is: 486,432.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,789.40 : 521,684.10 = 324,288.60 : x
  2. Step 2: Convert to fraction form
    347,789.40/521,684.10 = 324,288.60/x
  3. Step 3: Cross multiply
    347,789.40x = 521,684.10 × 324,288.60
  4. Step 4: Simplify right side
    347,789.40x = 169,176,206,431.26
  5. Step 5: Solve for x
    x = 169,176,206,431.26/347,789.40
  6. Step 6: Final answer
    x = 486,432.90

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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.