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Finding the Fourth Proportional to 448,593.33, 618,708.89 and 287,463.36

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Solution

The fourth proportional to 448,593.33, 618,708.89 and 287,463.36 is: 396,475.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,593.33 : 618,708.89 = 287,463.36 : x
  2. Step 2: Convert to fraction form
    448,593.33/618,708.89 = 287,463.36/x
  3. Step 3: Cross multiply
    448,593.33x = 618,708.89 × 287,463.36
  4. Step 4: Simplify right side
    448,593.33x = 177,856,137,099.93
  5. Step 5: Solve for x
    x = 177,856,137,099.93/448,593.33
  6. Step 6: Final answer
    x = 396,475.22

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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.