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Finding the Fourth Proportional to 448,859.16, 618,865.38 and 287,448.84

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Solution

The fourth proportional to 448,859.16, 618,865.38 and 287,448.84 is: 396,320.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,859.16 : 618,865.38 = 287,448.84 : x
  2. Step 2: Convert to fraction form
    448,859.16/618,865.38 = 287,448.84/x
  3. Step 3: Cross multiply
    448,859.16x = 618,865.38 × 287,448.84
  4. Step 4: Simplify right side
    448,859.16x = 177,892,135,597.16
  5. Step 5: Solve for x
    x = 177,892,135,597.16/448,859.16
  6. Step 6: Final answer
    x = 396,320.61

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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.