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Finding the Fourth Proportional to 660,481.96, 911,487.65 and 370,105.78

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Solution

The fourth proportional to 660,481.96, 911,487.65 and 370,105.78 is: 510,758.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,481.96 : 911,487.65 = 370,105.78 : x
  2. Step 2: Convert to fraction form
    660,481.96/911,487.65 = 370,105.78/x
  3. Step 3: Cross multiply
    660,481.96x = 911,487.65 × 370,105.78
  4. Step 4: Simplify right side
    660,481.96x = 337,346,847,663.62
  5. Step 5: Solve for x
    x = 337,346,847,663.62/660,481.96
  6. Step 6: Final answer
    x = 510,758.61

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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.