Home / 1,285,999.38-1,928,809.53-339,436.62

Finding the Fourth Proportional to 1,285,999.38, 1,928,809.53 and 339,436.62

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Solution

The fourth proportional to 1,285,999.38, 1,928,809.53 and 339,436.62 is: 509,104.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285,999.38 : 1,928,809.53 = 339,436.62 : x
  2. Step 2: Convert to fraction form
    1,285,999.38/1,928,809.53 = 339,436.62/x
  3. Step 3: Cross multiply
    1,285,999.38x = 1,928,809.53 × 339,436.62
  4. Step 4: Simplify right side
    1,285,999.38x = 654,708,587,486.99
  5. Step 5: Solve for x
    x = 654,708,587,486.99/1,285,999.38
  6. Step 6: Final answer
    x = 509,104.90

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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.