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Finding the Fourth Proportional to 479,463.36, 718,972.56 and 279,841.44

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Solution

The fourth proportional to 479,463.36, 718,972.56 and 279,841.44 is: 419,632.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,463.36 : 718,972.56 = 279,841.44 : x
  2. Step 2: Convert to fraction form
    479,463.36/718,972.56 = 279,841.44/x
  3. Step 3: Cross multiply
    479,463.36x = 718,972.56 × 279,841.44
  4. Step 4: Simplify right side
    479,463.36x = 201,198,316,510.89
  5. Step 5: Solve for x
    x = 201,198,316,510.89/479,463.36
  6. Step 6: Final answer
    x = 419,632.31

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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.