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Finding the Fourth Proportional to 503,276.40, 753,602.40 and 324,817.20

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Solution

The fourth proportional to 503,276.40, 753,602.40 and 324,817.20 is: 486,378.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,276.40 : 753,602.40 = 324,817.20 : x
  2. Step 2: Convert to fraction form
    503,276.40/753,602.40 = 324,817.20/x
  3. Step 3: Cross multiply
    503,276.40x = 753,602.40 × 324,817.20
  4. Step 4: Simplify right side
    503,276.40x = 244,783,021,481.28
  5. Step 5: Solve for x
    x = 244,783,021,481.28/503,276.40
  6. Step 6: Final answer
    x = 486,378.90

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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.