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Finding the Fourth Proportional to 480,979.14, 663,169.86 and 389,194.80

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Solution

The fourth proportional to 480,979.14, 663,169.86 and 389,194.80 is: 536,618.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,979.14 : 663,169.86 = 389,194.80 : x
  2. Step 2: Convert to fraction form
    480,979.14/663,169.86 = 389,194.80/x
  3. Step 3: Cross multiply
    480,979.14x = 663,169.86 × 389,194.80
  4. Step 4: Simplify right side
    480,979.14x = 258,102,261,028.73
  5. Step 5: Solve for x
    x = 258,102,261,028.73/480,979.14
  6. Step 6: Final answer
    x = 536,618.41

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1.5x scale

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.