Home / 645,083.20-967,509.60-408,001.60

Finding the Fourth Proportional to 645,083.20, 967,509.60 and 408,001.60

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Solution

The fourth proportional to 645,083.20, 967,509.60 and 408,001.60 is: 611,929.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,083.20 : 967,509.60 = 408,001.60 : x
  2. Step 2: Convert to fraction form
    645,083.20/967,509.60 = 408,001.60/x
  3. Step 3: Cross multiply
    645,083.20x = 967,509.60 × 408,001.60
  4. Step 4: Simplify right side
    645,083.20x = 394,745,464,815.36
  5. Step 5: Solve for x
    x = 394,745,464,815.36/645,083.20
  6. Step 6: Final answer
    x = 611,929.54

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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.