Home / 811,986.80-1,217,892.70-213,008

Finding the Fourth Proportional to 811,986.80, 1,217,892.70 and 213,008

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Solution

The fourth proportional to 811,986.80, 1,217,892.70 and 213,008 is: 319,489.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,986.80 : 1,217,892.70 = 213,008 : x
  2. Step 2: Convert to fraction form
    811,986.80/1,217,892.70 = 213,008/x
  3. Step 3: Cross multiply
    811,986.80x = 1,217,892.70 × 213,008
  4. Step 4: Simplify right side
    811,986.80x = 259,420,888,241.60
  5. Step 5: Solve for x
    x = 259,420,888,241.60/811,986.80
  6. Step 6: Final answer
    x = 319,489.05

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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.