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Finding the Fourth Proportional to 578,756.60, 867,843.30 and 342,171.80

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Solution

The fourth proportional to 578,756.60, 867,843.30 and 342,171.80 is: 513,085.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,756.60 : 867,843.30 = 342,171.80 : x
  2. Step 2: Convert to fraction form
    578,756.60/867,843.30 = 342,171.80/x
  3. Step 3: Cross multiply
    578,756.60x = 867,843.30 × 342,171.80
  4. Step 4: Simplify right side
    578,756.60x = 296,951,504,078.94
  5. Step 5: Solve for x
    x = 296,951,504,078.94/578,756.60
  6. Step 6: Final answer
    x = 513,085.30

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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.