Home / 857,847.36-1,285,934.27-408,447.48

Finding the Fourth Proportional to 857,847.36, 1,285,934.27 and 408,447.48

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Solution

The fourth proportional to 857,847.36, 1,285,934.27 and 408,447.48 is: 612,272.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,847.36 : 1,285,934.27 = 408,447.48 : x
  2. Step 2: Convert to fraction form
    857,847.36/1,285,934.27 = 408,447.48/x
  3. Step 3: Cross multiply
    857,847.36x = 1,285,934.27 × 408,447.48
  4. Step 4: Simplify right side
    857,847.36x = 525,236,609,984.90
  5. Step 5: Solve for x
    x = 525,236,609,984.90/857,847.36
  6. Step 6: Final answer
    x = 612,272.81

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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.