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Finding the Fourth Proportional to 787,771.62, 1,181,978.19 and 366,788.70

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Solution

The fourth proportional to 787,771.62, 1,181,978.19 and 366,788.70 is: 550,332.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,771.62 : 1,181,978.19 = 366,788.70 : x
  2. Step 2: Convert to fraction form
    787,771.62/1,181,978.19 = 366,788.70/x
  3. Step 3: Cross multiply
    787,771.62x = 1,181,978.19 × 366,788.70
  4. Step 4: Simplify right side
    787,771.62x = 433,536,243,738.45
  5. Step 5: Solve for x
    x = 433,536,243,738.45/787,771.62
  6. Step 6: Final answer
    x = 550,332.40

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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.