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Finding the Fourth Proportional to 508,446.69, 701,654.50 and 279,007.81

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Solution

The fourth proportional to 508,446.69, 701,654.50 and 279,007.81 is: 385,029.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,446.69 : 701,654.50 = 279,007.81 : x
  2. Step 2: Convert to fraction form
    508,446.69/701,654.50 = 279,007.81/x
  3. Step 3: Cross multiply
    508,446.69x = 701,654.50 × 279,007.81
  4. Step 4: Simplify right side
    508,446.69x = 195,767,084,016.27
  5. Step 5: Solve for x
    x = 195,767,084,016.27/508,446.69
  6. Step 6: Final answer
    x = 385,029.72

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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.