Home / 448,858.41-618,864.35-287,448.09

Finding the Fourth Proportional to 448,858.41, 618,864.35 and 287,448.09

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Solution

The fourth proportional to 448,858.41, 618,864.35 and 287,448.09 is: 396,319.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,858.41 : 618,864.35 = 287,448.09 : x
  2. Step 2: Convert to fraction form
    448,858.41/618,864.35 = 287,448.09/x
  3. Step 3: Cross multiply
    448,858.41x = 618,864.35 × 287,448.09
  4. Step 4: Simplify right side
    448,858.41x = 177,891,373,939.35
  5. Step 5: Solve for x
    x = 177,891,373,939.35/448,858.41
  6. Step 6: Final answer
    x = 396,319.57

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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.