Home / 645,464.77-967,311.42-408,383.04

Finding the Fourth Proportional to 645,464.77, 967,311.42 and 408,383.04

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Solution

The fourth proportional to 645,464.77, 967,311.42 and 408,383.04 is: 612,014.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,464.77 : 967,311.42 = 408,383.04 : x
  2. Step 2: Convert to fraction form
    645,464.77/967,311.42 = 408,383.04/x
  3. Step 3: Cross multiply
    645,464.77x = 967,311.42 × 408,383.04
  4. Step 4: Simplify right side
    645,464.77x = 395,033,573,489.76
  5. Step 5: Solve for x
    x = 395,033,573,489.76/645,464.77
  6. Step 6: Final answer
    x = 612,014.15

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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.