Home / 642,971.76-964,235.92-263,785.44

Finding the Fourth Proportional to 642,971.76, 964,235.92 and 263,785.44

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Solution

The fourth proportional to 642,971.76, 964,235.92 and 263,785.44 is: 395,587.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,971.76 : 964,235.92 = 263,785.44 : x
  2. Step 2: Convert to fraction form
    642,971.76/964,235.92 = 263,785.44/x
  3. Step 3: Cross multiply
    642,971.76x = 964,235.92 × 263,785.44
  4. Step 4: Simplify right side
    642,971.76x = 254,351,396,421.01
  5. Step 5: Solve for x
    x = 254,351,396,421.01/642,971.76
  6. Step 6: Final answer
    x = 395,587.20

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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.