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Finding the Fourth Proportional to 547,390.20, 821,085.30 and 492,277.80

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Solution

The fourth proportional to 547,390.20, 821,085.30 and 492,277.80 is: 738,416.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,390.20 : 821,085.30 = 492,277.80 : x
  2. Step 2: Convert to fraction form
    547,390.20/821,085.30 = 492,277.80/x
  3. Step 3: Cross multiply
    547,390.20x = 821,085.30 × 492,277.80
  4. Step 4: Simplify right side
    547,390.20x = 404,202,065,096.34
  5. Step 5: Solve for x
    x = 404,202,065,096.34/547,390.20
  6. Step 6: Final answer
    x = 738,416.70

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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.