Home / 693,720.34-1,040,679.72-213,988.66

Finding the Fourth Proportional to 693,720.34, 1,040,679.72 and 213,988.66

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Solution

The fourth proportional to 693,720.34, 1,040,679.72 and 213,988.66 is: 321,013.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,720.34 : 1,040,679.72 = 213,988.66 : x
  2. Step 2: Convert to fraction form
    693,720.34/1,040,679.72 = 213,988.66/x
  3. Step 3: Cross multiply
    693,720.34x = 1,040,679.72 × 213,988.66
  4. Step 4: Simplify right side
    693,720.34x = 222,693,658,771.98
  5. Step 5: Solve for x
    x = 222,693,658,771.98/693,720.34
  6. Step 6: Final answer
    x = 321,013.59

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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.