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Finding the Fourth Proportional to 660,581.15, 911,571.53 and 374,103.32

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Solution

The fourth proportional to 660,581.15, 911,571.53 and 374,103.32 is: 516,245.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,581.15 : 911,571.53 = 374,103.32 : x
  2. Step 2: Convert to fraction form
    660,581.15/911,571.53 = 374,103.32/x
  3. Step 3: Cross multiply
    660,581.15x = 911,571.53 × 374,103.32
  4. Step 4: Simplify right side
    660,581.15x = 341,021,933,919.96
  5. Step 5: Solve for x
    x = 341,021,933,919.96/660,581.15
  6. Step 6: Final answer
    x = 516,245.33

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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.