Home / 448,629.68-618,758.88-287,499.72

Finding the Fourth Proportional to 448,629.68, 618,758.88 and 287,499.72

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Solution

The fourth proportional to 448,629.68, 618,758.88 and 287,499.72 is: 396,525.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,629.68 : 618,758.88 = 287,499.72 : x
  2. Step 2: Convert to fraction form
    448,629.68/618,758.88 = 287,499.72/x
  3. Step 3: Cross multiply
    448,629.68x = 618,758.88 × 287,499.72
  4. Step 4: Simplify right side
    448,629.68x = 177,893,005,989.74
  5. Step 5: Solve for x
    x = 177,893,005,989.74/448,629.68
  6. Step 6: Final answer
    x = 396,525.27

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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.