Home / 857,874.33-1,285,974.77-408,474.45

Finding the Fourth Proportional to 857,874.33, 1,285,974.77 and 408,474.45

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Solution

The fourth proportional to 857,874.33, 1,285,974.77 and 408,474.45 is: 612,313.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,874.33 : 1,285,974.77 = 408,474.45 : x
  2. Step 2: Convert to fraction form
    857,874.33/1,285,974.77 = 408,474.45/x
  3. Step 3: Cross multiply
    857,874.33x = 1,285,974.77 × 408,474.45
  4. Step 4: Simplify right side
    857,874.33x = 525,287,834,847.25
  5. Step 5: Solve for x
    x = 525,287,834,847.25/857,874.33
  6. Step 6: Final answer
    x = 612,313.27

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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.