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Finding the Fourth Proportional to 490,387.77, 733,430.39 and 436,730.85

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Solution

The fourth proportional to 490,387.77, 733,430.39 and 436,730.85 is: 653,180.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,387.77 : 733,430.39 = 436,730.85 : x
  2. Step 2: Convert to fraction form
    490,387.77/733,430.39 = 436,730.85/x
  3. Step 3: Cross multiply
    490,387.77x = 733,430.39 × 436,730.85
  4. Step 4: Simplify right side
    490,387.77x = 320,311,675,456.88
  5. Step 5: Solve for x
    x = 320,311,675,456.88/490,387.77
  6. Step 6: Final answer
    x = 653,180.39

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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.