Home / 430,942.76-646,414.20-115,391.60

Finding the Fourth Proportional to 430,942.76, 646,414.20 and 115,391.60

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Solution

The fourth proportional to 430,942.76, 646,414.20 and 115,391.60 is: 173,087.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,942.76 : 646,414.20 = 115,391.60 : x
  2. Step 2: Convert to fraction form
    430,942.76/646,414.20 = 115,391.60/x
  3. Step 3: Cross multiply
    430,942.76x = 646,414.20 × 115,391.60
  4. Step 4: Simplify right side
    430,942.76x = 74,590,768,800.72
  5. Step 5: Solve for x
    x = 74,590,768,800.72/430,942.76
  6. Step 6: Final answer
    x = 173,087.42

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1.5x scale

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.