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Finding the Fourth Proportional to 539,179.60, 809,352.60 and 339,725.20

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Solution

The fourth proportional to 539,179.60, 809,352.60 and 339,725.20 is: 509,955.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,179.60 : 809,352.60 = 339,725.20 : x
  2. Step 2: Convert to fraction form
    539,179.60/809,352.60 = 339,725.20/x
  3. Step 3: Cross multiply
    539,179.60x = 809,352.60 × 339,725.20
  4. Step 4: Simplify right side
    539,179.60x = 274,957,473,905.52
  5. Step 5: Solve for x
    x = 274,957,473,905.52/539,179.60
  6. Step 6: Final answer
    x = 509,955.26

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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.