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Finding the Fourth Proportional to 448,863.11, 618,870.81 and 287,452.79

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Solution

The fourth proportional to 448,863.11, 618,870.81 and 287,452.79 is: 396,326.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,863.11 : 618,870.81 = 287,452.79 : x
  2. Step 2: Convert to fraction form
    448,863.11/618,870.81 = 287,452.79/x
  3. Step 3: Cross multiply
    448,863.11x = 618,870.81 × 287,452.79
  4. Step 4: Simplify right side
    448,863.11x = 177,896,137,889.71
  5. Step 5: Solve for x
    x = 177,896,137,889.71/448,863.11
  6. Step 6: Final answer
    x = 396,326.04

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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.