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Finding the Fourth Proportional to 422,718.04, 629,959.73 and 409,902.04

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Solution

The fourth proportional to 422,718.04, 629,959.73 and 409,902.04 is: 610,860.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,718.04 : 629,959.73 = 409,902.04 : x
  2. Step 2: Convert to fraction form
    422,718.04/629,959.73 = 409,902.04/x
  3. Step 3: Cross multiply
    422,718.04x = 629,959.73 × 409,902.04
  4. Step 4: Simplify right side
    422,718.04x = 258,221,778,444.85
  5. Step 5: Solve for x
    x = 258,221,778,444.85/422,718.04
  6. Step 6: Final answer
    x = 610,860.56

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.