Home / 658,401.06-987,594.30-209,109.90

Finding the Fourth Proportional to 658,401.06, 987,594.30 and 209,109.90

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Solution

The fourth proportional to 658,401.06, 987,594.30 and 209,109.90 is: 313,662.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,401.06 : 987,594.30 = 209,109.90 : x
  2. Step 2: Convert to fraction form
    658,401.06/987,594.30 = 209,109.90/x
  3. Step 3: Cross multiply
    658,401.06x = 987,594.30 × 209,109.90
  4. Step 4: Simplify right side
    658,401.06x = 206,515,745,313.57
  5. Step 5: Solve for x
    x = 206,515,745,313.57/658,401.06
  6. Step 6: Final answer
    x = 313,662.53

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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.