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Finding the Fourth Proportional to 682,385.50, 941,691.99 and 380,579.50

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Solution

The fourth proportional to 682,385.50, 941,691.99 and 380,579.50 is: 525,199.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,385.50 : 941,691.99 = 380,579.50 : x
  2. Step 2: Convert to fraction form
    682,385.50/941,691.99 = 380,579.50/x
  3. Step 3: Cross multiply
    682,385.50x = 941,691.99 × 380,579.50
  4. Step 4: Simplify right side
    682,385.50x = 358,388,666,708.21
  5. Step 5: Solve for x
    x = 358,388,666,708.21/682,385.50
  6. Step 6: Final answer
    x = 525,199.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.