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Finding the Fourth Proportional to 1,190,890.08, 1,784,255.04 and 992,485.44

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Solution

The fourth proportional to 1,190,890.08, 1,784,255.04 and 992,485.44 is: 1,486,994.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190,890.08 : 1,784,255.04 = 992,485.44 : x
  2. Step 2: Convert to fraction form
    1,190,890.08/1,784,255.04 = 992,485.44/x
  3. Step 3: Cross multiply
    1,190,890.08x = 1,784,255.04 × 992,485.44
  4. Step 4: Simplify right side
    1,190,890.08x = 1,770,847,148,446.62
  5. Step 5: Solve for x
    x = 1,770,847,148,446.62/1,190,890.08
  6. Step 6: Final answer
    x = 1,486,994.63

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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.