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Finding the Fourth Proportional to 536,478.40, 803,551.20 and 325,748.80

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Solution

The fourth proportional to 536,478.40, 803,551.20 and 325,748.80 is: 487,914.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,478.40 : 803,551.20 = 325,748.80 : x
  2. Step 2: Convert to fraction form
    536,478.40/803,551.20 = 325,748.80/x
  3. Step 3: Cross multiply
    536,478.40x = 803,551.20 × 325,748.80
  4. Step 4: Simplify right side
    536,478.40x = 261,755,839,138.56
  5. Step 5: Solve for x
    x = 261,755,839,138.56/536,478.40
  6. Step 6: Final answer
    x = 487,914.96

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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.