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Finding the Fourth Proportional to 659,661.60, 989,492.40 and 327,194.40

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Solution

The fourth proportional to 659,661.60, 989,492.40 and 327,194.40 is: 490,791.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,661.60 : 989,492.40 = 327,194.40 : x
  2. Step 2: Convert to fraction form
    659,661.60/989,492.40 = 327,194.40/x
  3. Step 3: Cross multiply
    659,661.60x = 989,492.40 × 327,194.40
  4. Step 4: Simplify right side
    659,661.60x = 323,756,372,122.56
  5. Step 5: Solve for x
    x = 323,756,372,122.56/659,661.60
  6. Step 6: Final answer
    x = 490,791.60

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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.