Home / 543,905.86-815,628.06-259,267.12

Finding the Fourth Proportional to 543,905.86, 815,628.06 and 259,267.12

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Solution

The fourth proportional to 543,905.86, 815,628.06 and 259,267.12 is: 388,790.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,905.86 : 815,628.06 = 259,267.12 : x
  2. Step 2: Convert to fraction form
    543,905.86/815,628.06 = 259,267.12/x
  3. Step 3: Cross multiply
    543,905.86x = 815,628.06 × 259,267.12
  4. Step 4: Simplify right side
    543,905.86x = 211,465,538,107.39
  5. Step 5: Solve for x
    x = 211,465,538,107.39/543,905.86
  6. Step 6: Final answer
    x = 388,790.70

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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.