Home / 400,629.60-600,867.72-120,146.40

Finding the Fourth Proportional to 400,629.60, 600,867.72 and 120,146.40

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Solution

The fourth proportional to 400,629.60, 600,867.72 and 120,146.40 is: 180,196.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,629.60 : 600,867.72 = 120,146.40 : x
  2. Step 2: Convert to fraction form
    400,629.60/600,867.72 = 120,146.40/x
  3. Step 3: Cross multiply
    400,629.60x = 600,867.72 × 120,146.40
  4. Step 4: Simplify right side
    400,629.60x = 72,192,093,434.21
  5. Step 5: Solve for x
    x = 72,192,093,434.21/400,629.60
  6. Step 6: Final answer
    x = 180,196.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.