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Finding the Fourth Proportional to 639,802.60, 959,133.50 and 324,097

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Solution

The fourth proportional to 639,802.60, 959,133.50 and 324,097 is: 485,856.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,802.60 : 959,133.50 = 324,097 : x
  2. Step 2: Convert to fraction form
    639,802.60/959,133.50 = 324,097/x
  3. Step 3: Cross multiply
    639,802.60x = 959,133.50 × 324,097
  4. Step 4: Simplify right side
    639,802.60x = 310,852,289,949.50
  5. Step 5: Solve for x
    x = 310,852,289,949.50/639,802.60
  6. Step 6: Final answer
    x = 485,856.56

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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.