Home / 816,771.87-1,225,216.13-217,729.89

Finding the Fourth Proportional to 816,771.87, 1,225,216.13 and 217,729.89

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Solution

The fourth proportional to 816,771.87, 1,225,216.13 and 217,729.89 is: 326,610.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,771.87 : 1,225,216.13 = 217,729.89 : x
  2. Step 2: Convert to fraction form
    816,771.87/1,225,216.13 = 217,729.89/x
  3. Step 3: Cross multiply
    816,771.87x = 1,225,216.13 × 217,729.89
  4. Step 4: Simplify right side
    816,771.87x = 266,766,172,122.48
  5. Step 5: Solve for x
    x = 266,766,172,122.48/816,771.87
  6. Step 6: Final answer
    x = 326,610.38

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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.