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Finding the Fourth Proportional to 392,556.40, 587,668.20 and 392,556.40

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Solution

The fourth proportional to 392,556.40, 587,668.20 and 392,556.40 is: 587,668.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,556.40 : 587,668.20 = 392,556.40 : x
  2. Step 2: Convert to fraction form
    392,556.40/587,668.20 = 392,556.40/x
  3. Step 3: Cross multiply
    392,556.40x = 587,668.20 × 392,556.40
  4. Step 4: Simplify right side
    392,556.40x = 230,692,912,986.48
  5. Step 5: Solve for x
    x = 230,692,912,986.48/392,556.40
  6. Step 6: Final answer
    x = 587,668.20

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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.