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Finding the Fourth Proportional to 2,787,829.50, 4,181,744.48 and 990,783.90

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Solution

The fourth proportional to 2,787,829.50, 4,181,744.48 and 990,783.90 is: 1,486,175.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787,829.50 : 4,181,744.48 = 990,783.90 : x
  2. Step 2: Convert to fraction form
    2,787,829.50/4,181,744.48 = 990,783.90/x
  3. Step 3: Cross multiply
    2,787,829.50x = 4,181,744.48 × 990,783.90
  4. Step 4: Simplify right side
    2,787,829.50x = 4,143,205,099,743.95
  5. Step 5: Solve for x
    x = 4,143,205,099,743.95/2,787,829.50
  6. Step 6: Final answer
    x = 1,486,175.93

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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.