Home / 857,255.40-1,285,397.10-324,793.80

Finding the Fourth Proportional to 857,255.40, 1,285,397.10 and 324,793.80

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Solution

The fourth proportional to 857,255.40, 1,285,397.10 and 324,793.80 is: 487,006.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,255.40 : 1,285,397.10 = 324,793.80 : x
  2. Step 2: Convert to fraction form
    857,255.40/1,285,397.10 = 324,793.80/x
  3. Step 3: Cross multiply
    857,255.40x = 1,285,397.10 × 324,793.80
  4. Step 4: Simplify right side
    857,255.40x = 417,489,008,617.98
  5. Step 5: Solve for x
    x = 417,489,008,617.98/857,255.40
  6. Step 6: Final answer
    x = 487,006.57

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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.