Home / 448,615.29-618,739.06-287,485.33

Finding the Fourth Proportional to 448,615.29, 618,739.06 and 287,485.33

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Solution

The fourth proportional to 448,615.29, 618,739.06 and 287,485.33 is: 396,505.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,615.29 : 618,739.06 = 287,485.33 : x
  2. Step 2: Convert to fraction form
    448,615.29/618,739.06 = 287,485.33/x
  3. Step 3: Cross multiply
    448,615.29x = 618,739.06 × 287,485.33
  4. Step 4: Simplify right side
    448,615.29x = 177,878,402,847.99
  5. Step 5: Solve for x
    x = 177,878,402,847.99/448,615.29
  6. Step 6: Final answer
    x = 396,505.44

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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.