Home / 816,859.20-1,225,288.80-443,611.20

Finding the Fourth Proportional to 816,859.20, 1,225,288.80 and 443,611.20

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Solution

The fourth proportional to 816,859.20, 1,225,288.80 and 443,611.20 is: 665,416.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,859.20 : 1,225,288.80 = 443,611.20 : x
  2. Step 2: Convert to fraction form
    816,859.20/1,225,288.80 = 443,611.20/x
  3. Step 3: Cross multiply
    816,859.20x = 1,225,288.80 × 443,611.20
  4. Step 4: Simplify right side
    816,859.20x = 543,551,834,914.56
  5. Step 5: Solve for x
    x = 543,551,834,914.56/816,859.20
  6. Step 6: Final answer
    x = 665,416.80

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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.