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Finding the Fourth Proportional to 547,554.96, 820,188 and 440,359.20

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Solution

The fourth proportional to 547,554.96, 820,188 and 440,359.20 is: 659,618.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,554.96 : 820,188 = 440,359.20 : x
  2. Step 2: Convert to fraction form
    547,554.96/820,188 = 440,359.20/x
  3. Step 3: Cross multiply
    547,554.96x = 820,188 × 440,359.20
  4. Step 4: Simplify right side
    547,554.96x = 361,177,331,529.60
  5. Step 5: Solve for x
    x = 361,177,331,529.60/547,554.96
  6. Step 6: Final answer
    x = 659,618.41

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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.