Home / 823,855.80-1,236,512.70-486,474.60

Finding the Fourth Proportional to 823,855.80, 1,236,512.70 and 486,474.60

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Solution

The fourth proportional to 823,855.80, 1,236,512.70 and 486,474.60 is: 730,142.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    823,855.80 : 1,236,512.70 = 486,474.60 : x
  2. Step 2: Convert to fraction form
    823,855.80/1,236,512.70 = 486,474.60/x
  3. Step 3: Cross multiply
    823,855.80x = 1,236,512.70 × 486,474.60
  4. Step 4: Simplify right side
    823,855.80x = 601,532,021,127.42
  5. Step 5: Solve for x
    x = 601,532,021,127.42/823,855.80
  6. Step 6: Final answer
    x = 730,142.36

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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.