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Finding the Fourth Proportional to 711,993.17, 982,546.94 and 385,305.93

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Solution

The fourth proportional to 711,993.17, 982,546.94 and 385,305.93 is: 531,720.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,993.17 : 982,546.94 = 385,305.93 : x
  2. Step 2: Convert to fraction form
    711,993.17/982,546.94 = 385,305.93/x
  3. Step 3: Cross multiply
    711,993.17x = 982,546.94 × 385,305.93
  4. Step 4: Simplify right side
    711,993.17x = 378,581,163,448.62
  5. Step 5: Solve for x
    x = 378,581,163,448.62/711,993.17
  6. Step 6: Final answer
    x = 531,720.22

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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.