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Finding the Fourth Proportional to 508,769.64, 702,121.84 and 279,336.59

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Solution

The fourth proportional to 508,769.64, 702,121.84 and 279,336.59 is: 385,495.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,769.64 : 702,121.84 = 279,336.59 : x
  2. Step 2: Convert to fraction form
    508,769.64/702,121.84 = 279,336.59/x
  3. Step 3: Cross multiply
    508,769.64x = 702,121.84 × 279,336.59
  4. Step 4: Simplify right side
    508,769.64x = 196,128,324,494.84
  5. Step 5: Solve for x
    x = 196,128,324,494.84/508,769.64
  6. Step 6: Final answer
    x = 385,495.34

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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.