Home / 391,916.85-587,973.96-111,434.10

Finding the Fourth Proportional to 391,916.85, 587,973.96 and 111,434.10

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Solution

The fourth proportional to 391,916.85, 587,973.96 and 111,434.10 is: 167,179.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,916.85 : 587,973.96 = 111,434.10 : x
  2. Step 2: Convert to fraction form
    391,916.85/587,973.96 = 111,434.10/x
  3. Step 3: Cross multiply
    391,916.85x = 587,973.96 × 111,434.10
  4. Step 4: Simplify right side
    391,916.85x = 65,520,349,056.04
  5. Step 5: Solve for x
    x = 65,520,349,056.04/391,916.85
  6. Step 6: Final answer
    x = 167,179.21

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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.