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Finding the Fourth Proportional to 711,992.54, 982,546.11 and 385,305.30

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Solution

The fourth proportional to 711,992.54, 982,546.11 and 385,305.30 is: 531,719.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,992.54 : 982,546.11 = 385,305.30 : x
  2. Step 2: Convert to fraction form
    711,992.54/982,546.11 = 385,305.30/x
  3. Step 3: Cross multiply
    711,992.54x = 982,546.11 × 385,305.30
  4. Step 4: Simplify right side
    711,992.54x = 378,580,223,677.38
  5. Step 5: Solve for x
    x = 378,580,223,677.38/711,992.54
  6. Step 6: Final answer
    x = 531,719.37

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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.