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Finding the Fourth Proportional to 404,329.80, 606,494.70 and 311,017.80

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Solution

The fourth proportional to 404,329.80, 606,494.70 and 311,017.80 is: 466,526.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,329.80 : 606,494.70 = 311,017.80 : x
  2. Step 2: Convert to fraction form
    404,329.80/606,494.70 = 311,017.80/x
  3. Step 3: Cross multiply
    404,329.80x = 606,494.70 × 311,017.80
  4. Step 4: Simplify right side
    404,329.80x = 188,630,647,305.66
  5. Step 5: Solve for x
    x = 188,630,647,305.66/404,329.80
  6. Step 6: Final answer
    x = 466,526.70

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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.