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Finding the Fourth Proportional to 536,780.69, 806,844.69 and 338,376.05

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Solution

The fourth proportional to 536,780.69, 806,844.69 and 338,376.05 is: 508,619.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,780.69 : 806,844.69 = 338,376.05 : x
  2. Step 2: Convert to fraction form
    536,780.69/806,844.69 = 338,376.05/x
  3. Step 3: Cross multiply
    536,780.69x = 806,844.69 × 338,376.05
  4. Step 4: Simplify right side
    536,780.69x = 273,016,915,131.45
  5. Step 5: Solve for x
    x = 273,016,915,131.45/536,780.69
  6. Step 6: Final answer
    x = 508,619.11

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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.