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Finding the Fourth Proportional to 554,809.82, 765,634.34 and 300,155.54

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Solution

The fourth proportional to 554,809.82, 765,634.34 and 300,155.54 is: 414,212.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,809.82 : 765,634.34 = 300,155.54 : x
  2. Step 2: Convert to fraction form
    554,809.82/765,634.34 = 300,155.54/x
  3. Step 3: Cross multiply
    554,809.82x = 765,634.34 × 300,155.54
  4. Step 4: Simplify right side
    554,809.82x = 229,809,383,436.29
  5. Step 5: Solve for x
    x = 229,809,383,436.29/554,809.82
  6. Step 6: Final answer
    x = 414,212.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.