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Finding the Fourth Proportional to 391,601.70, 587,402.55 and 367,982.10

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Solution

The fourth proportional to 391,601.70, 587,402.55 and 367,982.10 is: 551,973.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,601.70 : 587,402.55 = 367,982.10 : x
  2. Step 2: Convert to fraction form
    391,601.70/587,402.55 = 367,982.10/x
  3. Step 3: Cross multiply
    391,601.70x = 587,402.55 × 367,982.10
  4. Step 4: Simplify right side
    391,601.70x = 216,153,623,894.36
  5. Step 5: Solve for x
    x = 216,153,623,894.36/391,601.70
  6. Step 6: Final answer
    x = 551,973.15

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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.