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Finding the Fourth Proportional to 509,960.37, 703,783.59 and 306,020.19

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Solution

The fourth proportional to 509,960.37, 703,783.59 and 306,020.19 is: 422,330.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,960.37 : 703,783.59 = 306,020.19 : x
  2. Step 2: Convert to fraction form
    509,960.37/703,783.59 = 306,020.19/x
  3. Step 3: Cross multiply
    509,960.37x = 703,783.59 × 306,020.19
  4. Step 4: Simplify right side
    509,960.37x = 215,371,987,930.68
  5. Step 5: Solve for x
    x = 215,371,987,930.68/509,960.37
  6. Step 6: Final answer
    x = 422,330.83

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Double scale
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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.