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Finding the Fourth Proportional to 407,860.80, 611,791.20 and 404,908.35

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Solution

The fourth proportional to 407,860.80, 611,791.20 and 404,908.35 is: 607,362.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,860.80 : 611,791.20 = 404,908.35 : x
  2. Step 2: Convert to fraction form
    407,860.80/611,791.20 = 404,908.35/x
  3. Step 3: Cross multiply
    407,860.80x = 611,791.20 × 404,908.35
  4. Step 4: Simplify right side
    407,860.80x = 247,719,365,336.52
  5. Step 5: Solve for x
    x = 247,719,365,336.52/407,860.80
  6. Step 6: Final answer
    x = 607,362.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.