Home / 447,720.21-618,408.27-325,016.55

Finding the Fourth Proportional to 447,720.21, 618,408.27 and 325,016.55

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Solution

The fourth proportional to 447,720.21, 618,408.27 and 325,016.55 is: 448,925.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,720.21 : 618,408.27 = 325,016.55 : x
  2. Step 2: Convert to fraction form
    447,720.21/618,408.27 = 325,016.55/x
  3. Step 3: Cross multiply
    447,720.21x = 618,408.27 × 325,016.55
  4. Step 4: Simplify right side
    447,720.21x = 200,992,922,406.87
  5. Step 5: Solve for x
    x = 200,992,922,406.87/447,720.21
  6. Step 6: Final answer
    x = 448,925.28

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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.