Home / 391,983,940.72-587,975,910.86-146,359,757.52

Finding the Fourth Proportional to 391,983,940.72, 587,975,910.86 and 146,359,757.52

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Solution

The fourth proportional to 391,983,940.72, 587,975,910.86 and 146,359,757.52 is: 219,539,636.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,983,940.72 : 587,975,910.86 = 146,359,757.52 : x
  2. Step 2: Convert to fraction form
    391,983,940.72/587,975,910.86 = 146,359,757.52/x
  3. Step 3: Cross multiply
    391,983,940.72x = 587,975,910.86 × 146,359,757.52
  4. Step 4: Simplify right side
    391,983,940.72x = 86,056,011,741,070,736
  5. Step 5: Solve for x
    x = 86,056,011,741,070,736/391,983,940.72
  6. Step 6: Final answer
    x = 219,539,636.20

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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.