Home / 448,416.26-618,464.51-287,286.30

Finding the Fourth Proportional to 448,416.26, 618,464.51 and 287,286.30

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Solution

The fourth proportional to 448,416.26, 618,464.51 and 287,286.30 is: 396,230.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,416.26 : 618,464.51 = 287,286.30 : x
  2. Step 2: Convert to fraction form
    448,416.26/618,464.51 = 287,286.30/x
  3. Step 3: Cross multiply
    448,416.26x = 618,464.51 × 287,286.30
  4. Step 4: Simplify right side
    448,416.26x = 177,676,380,759.21
  5. Step 5: Solve for x
    x = 177,676,380,759.21/448,416.26
  6. Step 6: Final answer
    x = 396,230.91

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1.5x scale

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.