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Finding the Fourth Proportional to 579,278.60, 868,917.90 and 539,912.60

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Solution

The fourth proportional to 579,278.60, 868,917.90 and 539,912.60 is: 809,868.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,278.60 : 868,917.90 = 539,912.60 : x
  2. Step 2: Convert to fraction form
    579,278.60/868,917.90 = 539,912.60/x
  3. Step 3: Cross multiply
    579,278.60x = 868,917.90 × 539,912.60
  4. Step 4: Simplify right side
    579,278.60x = 469,139,722,575.54
  5. Step 5: Solve for x
    x = 469,139,722,575.54/579,278.60
  6. Step 6: Final answer
    x = 809,868.90

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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.