Home / 658,784.34-987,729.39-209,370.42

Finding the Fourth Proportional to 658,784.34, 987,729.39 and 209,370.42

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Solution

The fourth proportional to 658,784.34, 987,729.39 and 209,370.42 is: 313,913.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,784.34 : 987,729.39 = 209,370.42 : x
  2. Step 2: Convert to fraction form
    658,784.34/987,729.39 = 209,370.42/x
  3. Step 3: Cross multiply
    658,784.34x = 987,729.39 × 209,370.42
  4. Step 4: Simplify right side
    658,784.34x = 206,801,317,230.64
  5. Step 5: Solve for x
    x = 206,801,317,230.64/658,784.34
  6. Step 6: Final answer
    x = 313,913.53

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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.