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Finding the Fourth Proportional to 988,708.80, 1,482,976.80 and 323,860.80

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Solution

The fourth proportional to 988,708.80, 1,482,976.80 and 323,860.80 is: 485,762.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,708.80 : 1,482,976.80 = 323,860.80 : x
  2. Step 2: Convert to fraction form
    988,708.80/1,482,976.80 = 323,860.80/x
  3. Step 3: Cross multiply
    988,708.80x = 1,482,976.80 × 323,860.80
  4. Step 4: Simplify right side
    988,708.80x = 480,278,052,829.44
  5. Step 5: Solve for x
    x = 480,278,052,829.44/988,708.80
  6. Step 6: Final answer
    x = 485,762.90

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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.