Home / 391,736.42-587,604.81-258,585.55

Finding the Fourth Proportional to 391,736.42, 587,604.81 and 258,585.55

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Solution

The fourth proportional to 391,736.42, 587,604.81 and 258,585.55 is: 387,878.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,736.42 : 587,604.81 = 258,585.55 : x
  2. Step 2: Convert to fraction form
    391,736.42/587,604.81 = 258,585.55/x
  3. Step 3: Cross multiply
    391,736.42x = 587,604.81 × 258,585.55
  4. Step 4: Simplify right side
    391,736.42x = 151,946,110,038.47
  5. Step 5: Solve for x
    x = 151,946,110,038.47/391,736.42
  6. Step 6: Final answer
    x = 387,878.44

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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.