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Finding the Fourth Proportional to 888,847.12, 1,333,528.89 and 320,217.40

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Solution

The fourth proportional to 888,847.12, 1,333,528.89 and 320,217.40 is: 480,419.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,847.12 : 1,333,528.89 = 320,217.40 : x
  2. Step 2: Convert to fraction form
    888,847.12/1,333,528.89 = 320,217.40/x
  3. Step 3: Cross multiply
    888,847.12x = 1,333,528.89 × 320,217.40
  4. Step 4: Simplify right side
    888,847.12x = 427,019,150,646.86
  5. Step 5: Solve for x
    x = 427,019,150,646.86/888,847.12
  6. Step 6: Final answer
    x = 480,419.12

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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.