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Finding the Fourth Proportional to 452,788.36, 625,039.50 and 305,645.32

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Solution

The fourth proportional to 452,788.36, 625,039.50 and 305,645.32 is: 421,919.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,788.36 : 625,039.50 = 305,645.32 : x
  2. Step 2: Convert to fraction form
    452,788.36/625,039.50 = 305,645.32/x
  3. Step 3: Cross multiply
    452,788.36x = 625,039.50 × 305,645.32
  4. Step 4: Simplify right side
    452,788.36x = 191,040,397,990.14
  5. Step 5: Solve for x
    x = 191,040,397,990.14/452,788.36
  6. Step 6: Final answer
    x = 421,919.85

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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.