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Finding the Fourth Proportional to 543,823.20, 815,734.80 and 539,886.60

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Solution

The fourth proportional to 543,823.20, 815,734.80 and 539,886.60 is: 809,829.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,823.20 : 815,734.80 = 539,886.60 : x
  2. Step 2: Convert to fraction form
    543,823.20/815,734.80 = 539,886.60/x
  3. Step 3: Cross multiply
    543,823.20x = 815,734.80 × 539,886.60
  4. Step 4: Simplify right side
    543,823.20x = 440,404,287,673.68
  5. Step 5: Solve for x
    x = 440,404,287,673.68/543,823.20
  6. Step 6: Final answer
    x = 809,829.90

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.