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Finding the Fourth Proportional to 620,054.87, 855,619.92 and 361,954.22

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Solution

The fourth proportional to 620,054.87, 855,619.92 and 361,954.22 is: 499,464.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,054.87 : 855,619.92 = 361,954.22 : x
  2. Step 2: Convert to fraction form
    620,054.87/855,619.92 = 361,954.22/x
  3. Step 3: Cross multiply
    620,054.87x = 855,619.92 × 361,954.22
  4. Step 4: Simplify right side
    620,054.87x = 309,695,240,760.06
  5. Step 5: Solve for x
    x = 309,695,240,760.06/620,054.87
  6. Step 6: Final answer
    x = 499,464.25

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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.