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Finding the Fourth Proportional to 529,761.40, 793,329.90 and 339,929.80

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Solution

The fourth proportional to 529,761.40, 793,329.90 and 339,929.80 is: 509,052.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,761.40 : 793,329.90 = 339,929.80 : x
  2. Step 2: Convert to fraction form
    529,761.40/793,329.90 = 339,929.80/x
  3. Step 3: Cross multiply
    529,761.40x = 793,329.90 × 339,929.80
  4. Step 4: Simplify right side
    529,761.40x = 269,676,474,241.02
  5. Step 5: Solve for x
    x = 269,676,474,241.02/529,761.40
  6. Step 6: Final answer
    x = 509,052.71

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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.